ch05-discrete and continuous probability distributions

CHAPTER5 DiscreteandContinuousProbabilityDistributions toaccompanyBusinessStatistics ADecision MakingApproach6thedition byDavidF Groebner Chapter5 LearningObjectives Distinguishbetweendiscreteandcontinuousrandomvariables DifferentiatebetweenthebinomialandthePoissondiscreteprobabilitydistributionsandtheirapplications Beabletodiscusstheimportantpropertiesofthenormalprobabilitydistribution Recgonizesituationsinwhichtheuniformandexponentialdistributionsapply 5 1TheBinomialProbabilityDistribution5 2OtherDiscreteProbabilityDistributions5 3TheNormalProbabilityDistribution5 4OtherContinuousProbabilityDistributions 5 1TheBinomialProbabilityDistribution 5 1 1Vocabularies詞匯5 1 2MainContent主要內(nèi)容5 1 3Terminologies專業(yè)詞匯5 1 4Afterschoolextend課外擴展 5 1 1Vocabularies 1 strain 1 Thecollectivedescendantsofacommonancestor arace stock line orbreed 家系 血統(tǒng) 一個有共同祖先的集體后裔 家系 家譜 世系或血統(tǒng) 2 Anyofthevariouslinesofancestryunitedinanindividualorafamily ancestryorlineage 品系 聯(lián)合在個人或家族上的任何一個祖先的血系 血統(tǒng)或家系 3 Akindorsort 一種或一類 5 1 1Vocabularies 2 DouglasAmunicipalboroughofsoutheastIsleofMan England ontheIrishSea Itisapopularseasideresortandthemostimportantcityontheisland Population 20 368 道格拉斯 愛爾蘭海上英國馬恩島東南部自治市 它是島上最重要的城市和有名的海濱勝地 人口20 368 男子名 5 1 1Vocabularies 3 cloneAreplicaofaDNAsequence suchasagene producedbygeneticengineering DNA復制品 克隆4 tread 1 Togoonfoot walk 步行 走 2 Tosetdownthefoot step 踏 放下腳步 踏步 3 Thepartofawheelortirethatmakescontactwiththeroadorrails 踏面 車輪或輪胎與路面或軌道接觸的部分 4 Thepartofashoesolethattouchestheground 鞋底 鞋底接觸地面的部分 5 1 1Vocabularies 5 vehicle 1 Adeviceorstructurefortransportingpersonsorthings aconveyance 交通工具 運輸人或物的器具或結構 交通工具 Eg aspacevehicle 航天器 2 Aself propelledconveyancethatrunsontires amotorvehicle 機動車輛 汽車 一種裝有輪胎的自行驅(qū)動的交通工具 機動車輛 3 Amediumthroughwhichsomethingistransmitted expressed oraccomplished 傳播媒介 用來傳遞 表達或完成某物的工具或手段 Eg Hisnovelsareavehicleforhispoliticalviews 他的小說是傳達他的政治觀點的媒介 5 1 1Vocabularies 6 wear磨損常與away down或off一起使用 Eg rockswornawaybythesea shoesworndownattheheels 被海水沖刷的巖石 跟部磨損的鞋子7 involve含有 包括 使參與 影響 beinvolvedin包含在 與 有關 被卷入 專心地 做 beinvolvedwith涉及 becomeinvolvedin卷入 陷入 getinvolvedwith給 纏住Eg Thematterisseriousbecauseitinvolvesyourreputation Hewasinvolvedinworkingoutaplan 5 1 1Vocabularies 8 quasi Tosomedegree insomemanner 表示 類似 在某種程度上 在某種意義上9 item 1 Asinglearticleorunitinacollection anenumeration oraseries 項目 細目 文集 細目或一套中的單獨條目或項目 2 Aclauseofadocument suchasabillorcharter 條款 文件中的條款 例如一個議案或者是一個章節(jié) 3 Anentryinanaccount 帳目中的一個條目 4 Abitofinformation adetail 一些信息 細節(jié) 5 Ashortpieceinanewspaperormagazine 短文 報紙或雜志的一小段 5 1 1Vocabularies 10 CatalogSale目錄銷售 消費者通過查閱 目錄購物商場 定期發(fā)行的購物目錄 撥打 商場 話務中心的電話訂購 再由專業(yè)快遞公司提供快捷優(yōu)質(zhì)的送貨上門服務 消費者經(jīng)過驗貨甚至試用之后付款的購物方式 目錄銷售于50年前在經(jīng)濟發(fā)達國家中率先興起 如今已成為國際社會比較流行的新型商業(yè)形式 根據(jù)美國1980和1990年代兩次經(jīng)濟蕭條時期的經(jīng)驗 目錄銷售和倉儲超市是兩種能夠在經(jīng)濟不景氣中唯一取得成功的零售業(yè)形式 隨著國際互聯(lián)網(wǎng)的出現(xiàn) 目錄銷售已經(jīng)從郵寄印刷品發(fā)布商品信息發(fā)展成為利用因特網(wǎng)進行在線商品信息傳播的方式 5 1 1Vocabularies personnelmanager 人事主管 dismantle 分解 sideeffects 副作用 bloodpressure 血壓 clinical 臨床的 5 1 2MainContent 1 DefinitionThebinomialprobabilitydistributiondefinestheprobabilityofexactlyxsuccessesinntrialsoftheBernoulliprocess Thebernoullitrialisanexperimentwithtwo andonlytwo possibleoucomes 5 1 2MainContent 2 Characteristic onlytwopossibleoutcomes afixnumberofn independenteachother constantp ifpissuccess soq 1 pisfailureandp q 1 5 1 2MainContent 3 FormularWhere n randomsamplesize x numberofsuccesses n x numberoffailures p probabilityofasuccess q 1 p probabilityofafailure 3 Formular exercise AstudybytheInternationalCoffeeAssociationfoundthat52 oftheU S populationaged10andoverdrinkcoffee Forarandomlyselectedgroupof4individuals whatistheprobabilitythat3ofthemarecoffeedrinkers NumberProportionCoffeedrinkers x 3 52Noncoffeedrinkers1 48Totals41 00So p 0 52 1 p 0 48 x 3 n x 1 3 Formular exercise Tosolvetheproblem wesubstitute 5 1 2MainContent 4 UsingthebinomialdistributiontableAnExampleWorkedwithTables AnExampleWorkedwithTables Problem Accordingtoacorporateassociation 50 0 ofthepopulationofVermontwereboatingparticipantsduringthemostrecentyear Forarandomlyselectedsampleof20Vermontresidents withx thenumbersampledwhowereboatingparticipantsthatyear determine a E x b P x 8 c P x 10 d P x 12 e P 7 x 13 Answers a E x np 20 x0 50 10b P x 8 0 2517c P x 10 0 1762d P x 12 0 1201e P x 13 0 9423 P x 6 0 0577P 7 x 13 0 9423 0 0577 0 8846 UsingMicrosoftExcel b P x 8 InacellonanExcelworksheet type BINOMDIST 8 20 0 5 true andyouwillseetheanswer 0 2517c P x 10 InacellonanExcelworksheet type BINOMDIST 10 20 0 5 false andyouwillseetheanswer 0 1762d P x 12 InacellonanExcelworksheet type BINOMDIST 12 20 0 5 false andyouwillseetheanswer 0 1201e P 7 x 13 InacellonanExcelworksheet type BINOMDIST 13 20 0 5 true BINOMDIST 6 20 0 5 true andyouwillseetheanswer 0 8846 5 1 2MainContent 5 MeanandstandarddefinitionTheprobabilitydistributionforadiscreterandomvariabledefinestheprobabilityofadiscretevaluex Mean E x Variance s2 E x 2 BinominaldistributionMeanE x npVariances2 npq 5 1 3Terminologies DiscreterandomvariableBinomialprobabilitydistributionContinuousrandomvariableCountingruleforcombinationsBinomialformula 5 1 3Terminologies ExpectedvalueofadiscreterandomvariableExpectedvalueofabinomialdistributionStandarddeviationofadiscreterandomvariableStandarddeviationofthebinomialdistribution 5 1 4Afterschoolextend 1 catalogsales2 Usbiointroduction 5 2OtherDiscreteProbabilityDistributions 5 2 1Vocabularies詞匯5 2 2MainContent主要內(nèi)容5 2 3Terminologies專業(yè)詞匯5 2 4Afterschoolextend課外擴展 5 2 1Vocabularies 1 VermontAstateofthenortheastUnitedStatesborderingonCanada Itwasadmittedasthe14thstatein1791 ExploredbySamueldeChamplainin1609 theregionwasfirstpermanentlysettledbytheBritishin1724 ClaimstotheareawererelinquishedbyMassachusettsin1781 NewHampshirein1782 andNewYorkin1790 MontpelieristhecapitalandBurlingtonthelargestcity Population 564 964 佛蒙特州 美國東北部的一個州 與加拿大接壤 它于1791年被接受為美國的第十四個州 1609年塞繆爾 德 查普蘭勘探了這個地區(qū) 1724年英國人在該地區(qū)永遠定居了下來 馬薩諸塞州 新罕布什爾州和紐約州于1781年 1782年和1790年相繼放棄了對這個地區(qū)的權利 該州首府為蒙彼利埃 伯林頓是最大的城市 人口564 964 5 2 1Vocabularies 2 downsizevt Tomakeinasmallersize減小 汽車的尺寸 重量和耗油量 carsthatweredownsizedduringthegasoline conscious1970 s 在汽油短缺的七十年代以較小尺寸制造的小汽車acorporationthatdownsizeditspersonnelinresponsetoapooreconomy 因經(jīng)濟不景氣而裁員的股份有限公司 5 2 1Vocabularies 3 laylayaside Togiveup abandon 放棄 拋棄 Eg layasideallhopeofrescue 放棄援救的希望layoff Toterminatetheemploymentof aworker especiallytemporarily 暫時解雇員工 停止雇用 工人 尤指暫時性的layon Toapply something byorasifbyspreading it ontoaflatsurface 帶有 將某物抹在或好象涂在一平整表面上 Eg laidonathickSouthernaccent 帶有很重的南方口音 5 2 1Vocabularies chuckhole 馬路上的坑或凹處 segment 段 節(jié) 片斷 分割 strech 伸展 一段路程 時間 Vermont 佛蒙特州 acme 頂點 極致 vendingmachine 自動售貨機 自動販賣機 printer 印刷工 打印機 reinspect 再考慮 重新考察 glance 掃視 匆匆一看 Hewlett packardLaserJetprinter惠普激光打印機 5 2 2MainContent 1 thePoissondistribution 1 DefinitionThePoissondistributiondefinestheprobabilitythataneventwilloccurexactlyxtimesoveragivenspanoftime space ordistance Thepossiblecountsaretheintegers 5 2 2MainContent 1 thePoissondistribution 2 Assumptions istheaveragenumberofsuccessinasegmentofunitsize theprobabilityofxsuccessinasegmentisthesameforallsegmentsofthesamesize whathappensinonesegmenthasnoinfluenceonanynonoverlappingsegment weimaginedividingtimeorspaceintotinysubsegment Thenthechanceofmorethanonesuccessinasubsegmentisnegligibleandthechanceofexactlyonesuccessinatinysubsegementoflengthtis 5 2 2MainContent 1 thePoissondistribution 3 FormularWhere t sizeofthesegmentofinterestx numberofsuccessesinthesegmentofinterest expectednumberofsuccessinssegmentofunitsizee baseofthenaturallogarithmsystem 2 71828 5 2 2MainContent ThePoissondistributionexample Duringthe12p m 1p m noonhour arrivalsatacurbside 路旁的 bankingmachinehavebeenfoundtobePoissondistributedwithameanof1 3personsperminute Ifx numberofarrivalsperminute determine a E x l 1 3b 5 2 2MainContent c d P x 2 0 8571frompoissonTable l 1 3 k 2IfuseexcelP x 0 InacellinanExcelspreadsheet type POISSON 0 1 3 false P x 1 type POISSON 1 1 3 false P x 2 type POISSON 2 1 3 true 5 2 2MainContent 1 thePoissondistribution 4 MeanandstandarddefinitionE x Var x 5 2 2MainContent 1 thePoissondistribution練習 5 11和5 12 思考 二項分布和泊松分布區(qū)別和聯(lián)系 共同點 theybothrequirethatthetrialsbeindependent replacementorn N 5 5 2 2MainContent 2 thehypergeometricdistribution 1 BackgroundWhenthesampleislargerelativetothesizeofthepopulation thehypergeometricdistributionisthecorrectdistributionforcomputingprobabilitiesfortherandomvariableofinterest thehypergeometricdistributionisformedbytheratioofthenumberofwaysaneventofinterestcanoccuroverthetotalnumberofwaysanyeventcanoccur Case LindellCorporation 5 2 2MainContent 2 thehypergeometricdistribution 2 formulawhere N populationsizeX numberofsuccessesinthepopulationn samplesizex numberofsuccessesinthesamplen x numberoffailuresinthesample 5 2 2MainContent 2 thehypergeometricdistribution 3 example5 1 5 2 3Terminologies Poissondistributionthehypergeometricdistribution twopossibleoutcomepertrial standarddeviationofthepoissondistributionPoissonprobabilitydistributionArithmeticHypergeometricdistribution 5 2 4Afterschoolextend 1 ThePoissondistributionasalimitingformoftheBinomial 翻譯 ItshouldbeevidentfromthethreeprinciplesofthePoissonprocessthatthePoissondistributionrelatestothebinomialdistribution AlthoughthePoissonusuallyfindsapplicationsinspaceandtimeproblemsasillustratedbyexamples5 19and5 20 itcanbeviewedasalimitingformofthebinomialdistribution Inthecaseofthebinomial ifnisquitelargeandpissmall theconditionsbegintosimulatethecontinuousspaceortimeregionimplicationsofthePoissonprocess 5 2 4Afterschoolextend TheindependenceamongBernoullitrialsinthebinomialcaseisconsistentwithproperty2ofthePoissonprocess Allowingtheparameterptobeclosetozerorelatestoproperty3 Indeed weshallnowderivethePoissondistributionasalimitingformofthebinomialdistributionwhen andnpremainsconstant Hence ifnislargeandpiscloseto0 thePoissondistributioncanbeused with toapproximatebinomialprobabilities Ifpiscloseto1 wecanstillusethePoissondistributiontoapproximatebinomialprobabilitiesbyinterchangingwhatwehavedefinedtobeasuccessandafailure therebychangingptoavaluecloseto0 5 2 4Afterschoolextend 2 關于shipping相關材料補充Dealersinthecommodityexchangescaneitherbuyforimmediatedelivery spot or cash orforwarddeliveryin say threemonths time Forwarddeliveryisknownasafuturecontract Inthesimplestcase whenpricearerising youcanbuyforimmediatedeliveryandsellforward then providedthecostofwarehouse profit ofcourse thisisnotpossiblewhenpricesarefalling 5 2 4Afterschoolextend 1 dealer 經(jīng)銷商 通常與廠商有密切聯(lián)系 也可指證券 外匯及黃金市場上的交易商 交易人 經(jīng)紀人等 speculativedealer交易所投機商 以某種方式待人的人 Eg adoubledealer表里不一的人 兩面派 afair plain dealer行為正直的人 2 commodityexchanges商品交易 所 3 forwarddelivery 外貿(mào) 遠期交貨 shortdelivery的對稱 Eg Bothcashandforwardoilshowedlargelossesinthemarketbytheendofmorning 早市結束時現(xiàn)貨和期貨的石油價格下跌很多 注 forward還可做運輸 運送 寄送解 Eg Thegoodswillbeforwardedtoyouinthenextweek 貨物將于下周發(fā)運給你方 5 2 4Afterschoolextend 4 warehouse倉庫 貨棧 批發(fā)商店 大零售商店 warehousing倉庫費 倉庫儲存 5 shipn 船 v 裝船 裝運 Eg Weexpecttoshipthegoodsnextweek 6 shipment theactofputtinggoodsonaship裝運 Eg Portofshipment裝運港 goodsbeingcariedbyship船貨 到貨 Eg ourcustomersaresatisfiedwithyourlastshipment 7 shippingn 海運Eg Shippinginstruction裝船要求 shippingadvice裝船通知 shippingdocuments裝船單據(jù) shippingspace艙位 8 shippern 發(fā)貨人 5 3TheNormalProbabilityDistribution 5 3 1Vocabularies詞匯5 3 2MainContent主要內(nèi)容5 3 3Terminologies專業(yè)詞匯5 3 4Afterschoolextend課外擴展 5 3 1Vocabularies 1 highlightn 1 Anareaoraspotinadrawing painting orphotographthatisstronglyilluminated 最亮點或最高區(qū) 素描 油畫或照片中得到最大量光照的一點或一片 2 Anespeciallysignificantorinterestingdetailorevent 最重要的或最有趣的細節(jié)或事件v 1 Tomakeprominent emphasize 使 顯得重要 強調(diào)的 2 Tobeahighlightof 為 中最突出的事物 3 Tomark importantpassagesoftext withausuallyfluorescentmarkerasameansofmemoryretentionorforlaterreference 標示記號 用熒光筆標出 文本中重要的段落 以便幫助記憶或日后查找參考 5 3 1Vocabularies 2 Midland 1 AcityofcentralMichiganwestofBayCity Chemicalindustriesareimportanttoitseconomy Population 38 053 米德蘭 美國密歇根州中部一城市 位于灣市以西 化學工業(yè)為其經(jīng)濟的主要支柱 人口38 053 2 Acityofwest centralTexaswest southwestofAbilene Itisanindustrialcenterinacattle ranchingarea Population 89 443 米德蘭 美國得克薩斯州中西部一城市 位于艾伯林西南偏西 為該畜牧業(yè)區(qū)中的工業(yè)中心 人口89 443 5 3 1Vocabularies 3 enzymeAnyofnumerousproteinsorconjugatedproteinsproducedbylivingorganismsandfunctioningasbiochemicalcatalysts 酶 由活的有機體產(chǎn)生的各種蛋白質(zhì)或蛋白質(zhì)結合體的一種 起生物催化劑的作用4 giftcertificate 禮券 n Acertificateusuallypresentedasagiftthatentitlestherecipienttoselectmerchandiseofanindicatedcashvalueatacommercialestablishment 贈券 贈品證明書 作為贈送禮物的證明書 表明領受人有權在指定的金額范圍內(nèi)在一商場選擇商品的證明書 5 3 2MainContent 1 characteristics 1 Animportantfamilyofcontinuousdistributions 2 itisunimodal thatis thenormaldistributionpeaksatasinglevalue 3 symmetrical thisismeansthatthetwoareasunderthecurvebetweenthemeanandanytwopointsequidistantontheeithersideofthemeanareidentical Onesideofthedirtributionisthemirrorimageoftheotherside 4 mean median modeareequal 5 asymptotictotheX axis 6 variationdeterminesthewidthofthenormaldistribution 5 3 2MainContent 2 NormalProbabilityDensityFunctionwhere x anyvalueofthecontinuousrandomvariable populationmean 位置參數(shù) populationstandarddeviation 形狀參數(shù) 3 14159e baseofthenaturallog 2 71828Note 1 Theareaunderaprobabilitydensityfunctionbetweentwobounds aandb istheprobabilitythatavaluewilloccurwithintheboundedintervalbetweenaandb 2 thetotalareaundereachnormalcurveequals1 5 3 2MainContent 3 theStandardNormalDistribution 5 3 2MainContent 4 Usethestandardnormaltabletofind 1 Thez scoresuchthattheareafromthemidpointtozis0 20 Answer z 0 52 2 TheprobabilityassociatedwithZ P 0 z 1 32 Answer 0 4066 3 Theprobabilityassociatedwithz P 1 10 z 1 32 Answer 0 3643 0 4066 0 7709 4 Theprobabilityassociatedwithz P 1 00 z 1 32 Answer 0 4066 0 3413 0 0653 5 3 2MainContent 5 CalculateStandardNormalDistribution AnExampleIthasbeenreportedthattheaveragehotelcheck intime fromcurbsidetodeliveryofbagsintotheroom is12 1minutes Maryhasjustleftthecabthatbroughthertoherhotel Assuminganormaldistributionwithastandarddeviationof2 0minutes whatistheprobabilitythatthetimerequiredforMaryandherbagstogettotheroomwillbe 1 greaterthan14 1minutes 2 lessthan8 1minutes 3 between10 1and14 1minutes 4 between10 1and16 1minutes AnExample cont Givenintheproblem 12 1minutes s 2 0minutes1 Greaterthan14 1minutesP x 14 1 P z 1 00 5 3413 0 15872 Lessthan8 1minutesP x 8 1 P z 2 00 5 4772 0 0228 Example UsingMicrosoftExcel Problem WhatistheprobabilitythatthetimerequiredforMaryandherbagstogettotheroomwillbe 3 between10 1and14 1minutes InacellonanExcelworksheet typeallononeline NORMDIST 14 1 12 1 2 true NORMDIST 10 1 12 1 2 true andyouwillseetheanswer 0 68264 between10 1and16 1minutes InacellonanExcelworksheet typeallononeline NORMDIST 16 1 12 1 2 true NORMDIST 10 1 12 1 2 true andyouwillseetheanswer 0 8185 5 3 2MainContent 6 approximateareasunderthenormalcurveTherearesomegeneralrules 1 enclosesabout68 ofX s 2 enclosesabout95 ofX s 3 enclosesabout99 ofX s 5 3 2MainContent 7 二項分布的正態(tài)近似BinomialProbabilityFunction當實驗次數(shù)很大時 用手工計算或計算器計算求解二項概率函數(shù)是困難的 當試驗次數(shù)大于20 np 5和n 1 p 5時 正態(tài)分布可以作為二項分布的近似 Example假定歷史經(jīng)驗表明 某公司發(fā)票出錯的概率為10 現(xiàn)計算選取100張發(fā)票 恰好有12張發(fā)票有錯的概率 13張或更少張發(fā)票出錯的概率 計算100次試驗中恰好有12次成功的二項概率 采用正態(tài)近似計算概率 5 3 3Terminologies 5 3 4Afterschoolextend 1 aboutnormaldistribution 翻譯 Themostimportantcontinuousprobabilitiesdistributionintheentirefieldofstatisticsisthenormaldistribution Itsgraph calledthenormalcurve isthebell shapedcurveoffigure6 2 whichdescribesapproximatelymanyphenomenathatoccurinnature industry andresearch Physicalmeasurementsinareassuchasmeteorologicalexperiments rainfallstudies andmeasurementsofmanufacturedpartsareoftenmorethanadequatelyexplainedwithanormaldistribution 5 3 4Afterschoolextend 1 aboutnormaldistribution 接前頁 Inaddition errorsinscientificmeasurementsareextremelywellapproximatedbyanormaldistribution In1733 AbrahamDemoivredevelopedthemathematicalequationofthenormalcurve Itprovidedabasisforwhichmuchofthetheoryofinductivestatisticsisfounded ThenormaldistributionisoftenreferredtoastheGaussiandistribution inhonorofKarlFriedrichGauss 1777 1855 whoalsoderiveditsequationfromastudyoferrorsinrepeatedmeasurementsofthesamequantity 5 3 4Afterschoolextend 2 normalapproximationtothebinomialProbabilitiesassociatedwithbinomialexperimentsarereadilyobtainablefromtheformulab x n p ofthebinomialdistributionorfromTableA 1whennissmall Inaddition binomialprobabilitiesarereadilyavailableinmanysoftwarecomputerpackages However itisinstructivetolearntherelationshipbetweenthebinomialandnormaldistribution Insection5 6weillustratedhowthePoissondistributioncanbeusedtoapproximatebinomialprobabilitieswhennisquitelargeandpisverycloseto0or1 boththebinomialandPoissondistributionsarediscrete 5 3 4Afterschoolextend 2 normalapproximationtothebinomial 接前頁 Thefirstapplicationofacontinuousprobabilitydistributiontoapproximateprobabilitiesoveradiscretesamplespaceisdemonstratedbyexample6 12 wherethenormalcurvewasused Thenormaldistributionisoftenagoodapproximationtoadiscretedistributionwhenthelattertakesonasymmetricbellshape Fromatheoreticalpointofview somedistributionsconvergetothenormalastheirparametersapproachcertainlimits Thenormaldistributionisaconvenientapproximatingdistributionbecausethecumulativedistributionfunctionissoeasilytabled 5 4OtherContinuousProbabilityDistributions 5 4 1Vocabularies詞匯5 4 2MainContent主要內(nèi)容5 4 3Terminologies專業(yè)詞匯5 4 4Afterschoolextend課外擴展5 4 5Literature文獻導讀 5 4 1Vocabularies 1 elapseToslipby pass 悄悄過去 消逝 Weekselapsedbeforewecouldstartrenovating 翻譯 幾周過去后我們才開始修復n 名詞 Passage lapse 過去 逝去 metagainafteranelapseofmanyyears 翻譯 多年后又相逢 5 4 1Vocabularies 2 drive in 1 n Anestablishmentdesignedtopermitcustomerstoremainintheirmotorvehicleswhilebeingaccommodated 免下車設施 顧客接受服務時可不下車的營業(yè)場所或娛樂設施 如免下車餐館 免下車電影院 美 讓顧客不下汽車即可吃飯 辦事 看戲等的 路旁餐館 銀行 露天電影院Eg Let seatatthedrive intonight 咱們今晚在 免下車 餐館吃飯吧 2 adj 免下車的 路邊服務式的 飯店 電影院等 露天營業(yè)式的 3 drivein趕進 敲進 5 4 1Vocabularies 3 tellern 1 Onewhotells 敘述者 Eg atelleroftalltales 講述難以令人相信的故事的人 2 Abankemployeewhoreceivesandpaysoutmoney 出納員 接受和支付錢款的銀行雇員 3 Amachine asinabank thatautomaticallyconductspersonalfinancialtransactionsinresponsetoaclient suseofacodedcard 銀行柜員機 銀行使用的能對委托人持用的有密碼的卡片作出反應并自動進行個人財產(chǎn)交易的機器 4 Apersonappointedtocountvotesinalegislativeassembly 計票人 被指派在議會中數(shù)票的人 5 4 1Vocabularies