選必3Unit2Reading:LifeonaspacestationLivinginspaceiseverywould-beastronaut'sdream.Mysix-monthstayonaspacestationhascometoanend,andithasbeenachallengingbutmagicaladventure.Ibetyou'dlovetoknowwhatdailylifeislikeupinspaceandhowitdiffersfromthatontheEarth—thelowgravitydefinitelymakesordinarythingsstrange!would-beastronaut'sdream準(zhǔn)宇航員的夢(mèng)想achallengingbutmagicaladventure.充滿挑戰(zhàn)但神奇的冒險(xiǎn)Thestrangenessoflivinginspaceisapparentfromthemomentwesleep.Duetothenearabsenceofgravityinspace,wehavetoattachourselvessothatwedon'tfloataround.Weusuallysleepinprivatequarters,whicharemorelikelargecupboards,orinsleepingbagsattachedtothewallsortheceiling.It'sstrangethatwetrytosleepwithnopressureagainstourback,buttheunusualbedsdon'tbotherusanymore.Afterabouteighthoursofsleep,westartourdayofwork.strangeness≈unusualnessbeapparentfrom明顯不同于Duetothenearabsenceofgravityinspace,wehavetoattachourselvessothatwedon'tfloataround.由于太空中幾乎沒(méi)有重力，我們必須附著自己，這樣我們就不會(huì)漂浮。Theroutinetasksthatoccupymostofthedayaredemanding,buttheycanalsobeextremelyrewarding.Ourmainmissionistoconductscientificresearch.Weneedtoevaluatetheeffectsoflowgravityonanimalsandplants.Creaturessuchasmicefishandmosquitoeshavealsobeensenttothestation!Inalow-gravityenvironment,wecanlearnmoreaboutchangesincellsandmicroorganismsunderthemicroscope.Aswellasdoingthesebiologicalexperiments,wecarryoutexperimentsinotherresearchfields.IhavebeenworkingononeexperimentwhichlocatesandtrackslightningoverlargeregionsoftheEarth.Hopefully,itwillcastnewlightontheEarth'sclimateandleadtobetterlightningprotection.Withsomuchgoingonthespacestationneedsalotofmaintenance,soweconstantlychecksupportsystemsanddosomecleaning.Theroutinetasksthatoccupymostofthedayaredemanding,buttheycanalsobeextremelyrewarding.占據(jù)一天中大部分時(shí)間的例行任務(wù)要求很高，但它們也可能非常有益evaluate≈assess≈estimatecastnewlighton投下新的光芒betterlightningprotection更好的防雷保護(hù)maintenance≈mending≈fixtureThemostchallengingworktakesplacewhenweneedtoperformtasksoutsidethespacestationsuchastestingnewequipment,monitoringscientificexperimentsorrepairingthespacestation.Inthecircumstances,it'stimeforaspacewalk.First,weputonourspacesuits,whichallowustobreatheinspaceandprotectusfromexposuretothecoldandradiation.Thenweheadout,andsometimesperformtasksforhoursatatime,withthebeautifulEarthvisiblebelow.SplendidastheviewoftheEarthis,spacewalkingisnotasexcitingasyoumightthink.It'sprobablythemostdangerouswork,withpotentialriskssuchaselectricshocks.That'swhyeveryspacewalkiscarefullyplanned.SplendidastheviewoftheEarthis,spacewalkingisnotasexcitingasyoumightthink.盡管地球的景色很燦爛，但太空行走并不像你想象的那么令人興奮。potentialrisks潛在風(fēng)險(xiǎn)Inviewofthelow-gravityenvironment,eatingisalsodifferentinspace.Mostfoodisdriedorfreeze-dried.It'saluxurytoeatfreshfood.becausefreshproducesuchasfruitandvegetablescanonlybedeliveredtothespacestationfromtheEartheverycoupleofmonths.Saltandpepperareonlyinliquidform,sothattheywillnotfloatawayandblocktheairpipes.However,liquidscan'tbeeasilycontrolledinspace.Wemustdrinkwateroranyotherliquidsoutofabagthroughathintubeofplastic.Furthermore,tokeepourbodyhealthy,wemustensureabalancedsupplyofnutrientsbytakingpills.freeze-dried凍干的aluxury奢侈品Spendingsometimeinthegymisofvitalimportancetoastronauts'health.Didyouknowthatinjustfivemonths,astronautscouldloseasignificantamountofmuscleandbonemass?Consideringthesenegativeeffectslowgravityhasonthehumanbodywedisciplineourselvestodoatleasttwohoursofexerciseeveryday.Exerciseinspaceisnotyouraverageworkout.Wehavetobetiedontospeciallydesignedexerciseequipmenttostopourselvesfromfloatingaround.beofvitalimportance至關(guān)重要loseasignificantamountofmuscleandbonemass大量肌肉和骨量流失disciplineourselves自律Duringourleisuretime,there'snothingwelikemorethantositbackwiththerestofthecrewandwatchourremarkableplanetgoby,takingpicturesforourfamilyandfriendsbackhome.Asthespacestationtravelsataspeedofabout17,500milesperhour,wegettoseethesunriseevery90minutes.Inthesepreciousmoments,allthechallengesoflifeinspaceseemworthit.preciousmoments珍貴的時(shí)刻GrammarUsageForthousandsofyears,peoplehavelookedtothestarryskyandwonderedwhat,orwho,isoutthere.Intheearly1600s,Galileowasthefirsttousehistelescopetoexploretheskyandsincethen,telescopeshavecontinuallyimproved.thestarrysky星空Onemajorbreakthroughcamein1990,whentheHubbleSpaceTelescopewaslaunched.ThatHubbleisbasedinspaceallowsittoseefurtherthanground-basedtelescopes,anditallowsscientiststolearnmoreabouttheuniverse.Hubbleobservationshaveplayedacrucialroleinthediscoveryofthemysteriousdarkenergy.HubblewasfollowedbytheKeplerSpaceTelescopein2009.Kepler'sScientificgoalistosearchforEarth-sizeplanetsorbitingotherstars.Whetherlifeonotherplanetsdoesexistisyettobeproved,butthesignsarepromising:KeplerhasdetectedmanysuitableplanetsthatarealmostthesamesizeastheEarth.haveplayedacrucialrole發(fā)揮了至關(guān)重要的作用themysteriousdarkenergy神秘的暗能量Whetherlifeonotherplanetsdoesexistisyettobeproved,butthesignsarepromising:KeplerhasdetectedmanysuitableplanetsthatarealmostthesamesizeastheEarth.其他行星上的生命是否確實(shí)存在還有待證實(shí)，但跡象是有希望的：開(kāi)普勒已經(jīng)探測(cè)到許多合適的行星，它們的大小幾乎與地球相同InrecentyearsChinahasdevelopedadvancedtelescopesaswell.OneexampleistheinnovativeFASTwhichisthelargestsingle-dishradiotelescopeintheworld.Withadishthesizeof30footballfields,FASTisabletocarryoutobservationswithextraordinarysensitivity.Oneofitsscientificgoalsistodetectcommunicationsignalsbetweenthestarsintheuniverse.withextraordinarysensitivity.具有非凡的敏感性Itisclearthattelescopesarecrucialtoolsforspaceexplorationandthatdevelopingtherequiredtechnologywillhelpastronomersallovertheworldmakeexcitingdiscoveries.Howmuchwewilllearnfromthetelescopesismerelylimitedbyourimagination.Howmuchwewilllearnfromthetelescopesismerelylimitedbyourimagination.我們能從望遠(yuǎn)鏡中學(xué)到多少東西，只是受到我們的想象力的限制。ExtendedReading:WhyweexploreIn1969,whenNeilArmstrongfirstlandedontheMoon,manypeoplethoughtthatsoonwewouldberegularlyvisitingotherplanetsinoursolarsystemandwouldevendaretotravelbeyondit.Thisisclearlynotthecase.Therealityisthatspaceexplorationisextremelydifficultanddangerous,cantakeaverylongtimeandcostsahugeamountofmoney.Somepeoplebelievethatwhilespaceexplorationexpandsourunderstandingoftheuniverse,itisawasteofthepublicpurseanddoesnothingtoenhancethequalityofourliveshereontheEarth.Whydowecontinuetoexplorespace,then?Somepeoplebelievethatwhilespaceexplorationexpandsourunderstandingoftheuniverse,itisawasteofthepublicpurseanddoesnothingtoenhancethequalityofourliveshereontheEarth.有些人認(rèn)為，雖然太空探索擴(kuò)大了我們對(duì)宇宙的理解，但它浪費(fèi)了公共資金，對(duì)提高我們?cè)诘厍蛏系纳钯|(zhì)量沒(méi)有任何幫助。Itisinournaturetoexplore.FromtheveryearlydaysofhumanlifeontheEarth,ourcuriosityabouttheunknownhaskeptusadventuringintonewplaces.Welongtovisitthickandwildforests,climbvastmountainranges,andcrossdeepoceans.Wedesiretoexplorethefurthestfrontierofall-space.AsStephenHawkingoncesaid,”Remembertolookupatthestarsandnotdownatyourfeet.Trytomakesenseofwhatyouseeandwonderaboutwhatmakestheuniverseexist.Becurious."Thatwearefascinatedbytheskyisevidentinancienttalesfromaroundtheworld,suchasthatofChang'e.Whilespaceexplorationisareality,weremaincuriousaboutthemysteriesoftheuniverse.Witheachspacemissioncomesgreaterinsight,thusmotivatingustocontinuealongthesamepathofadventure.Welongtovisitthickandwildforests,climbvastmountainranges,andcrossdeepoceans.我們渴望去茂密的野生森林，攀登廣闊的山脈，穿越深海。Remembertolookupatthestarsandnotdownatyourfeet.Trytomakesenseofwhatyouseeandwonderaboutwhatmakestheuniverseexist.Becurious.記得抬頭看星星，不要低頭看腳。試著理解你所看到的，并想知道是什么讓宇宙存在。保持好奇心。befascinatedby著迷于Theresultsofthesespaceinvestigationshavemademajorcontributionstoanunderstandingoftheorigin,evolution,andlikelyfutureoftheuniverse,suchasplanets,stars,andallotherformsofmatterandenergy.Exploringspacehelpsaddressfundamentalquestionsaboutourplaceintheuniverseandthehistoryofoursolarsystem.ItisthroughourresearchintospacethatwehaveconfirmedthattheEarthisroundandthatitorbitstheSun.Aswelearnmoreabouttheuniverse,wemayonedayanswerthequestionwhetherthereislifeonotherplanets.Exploringspacehelpsaddressfundamentalquestionsaboutourplaceintheuniverseandthehistoryofoursolarsystem.ItisthroughourresearchintospacethatwehaveconfirmedthattheEarthisroundandthatitorbitstheSun.探索太空有助于解決有關(guān)我們?cè)谟钪嬷械奈恢煤吞?yáng)系歷史的基本問(wèn)題。正是通過(guò)我們對(duì)太空的研究，我們確認(rèn)地球是圓的，它繞太陽(yáng)公轉(zhuǎn)。Withtechnologiesfirstresearchedanddevelopedforspaceexploration,wecansolvesomeofthebigproblemsfacingmankind,makingourlivessaferandeasierOneoftheseisearthquakeshockabsorbers.Shockabsorbersoriginallyappliedtothespaceshuttlelaunchhavealsobeensetupinthecitieswithahighfrequencyofearthquakesinordertoprotectbuildingsandsavelives.Sometechnologiesneedfurtherresearchtobettersolvereal-lifeproblems.Forexample,liquidhydrogenisacleanalternativeenergysourcethatisusedwidelyasrocketfuel,anditislikelythathydrogenfuelcellvehicleswillbemass-producedandlaunchedinthenearfuture.ThesescientificandtechnologicaladvancescanprovidebenefitstosocietiesontheEarthinmanyareasincludinghealth,energyandinformationtechnologyThisshouldbeastrongmotiveforcontinuingtoexplorespace.withahighfrequencyofearthquakes地震頻率高acleanalternativeenergysource一種清潔的替代能源astrongmotive強(qiáng)烈的動(dòng)機(jī)Althoughspaceexplorationdemandshugeinvestment,thespaceindustrycanactuallybringgreateconomicvalue.Ithasbeencalculatedthattheglobalspaceeconomyisincreasingbybillionsofdollarseveryyear.Atthesametime,spaceexplorationcanprovideavarietyofcareeropportunitiesforyoungpeople.Jobsinthespaceindustrygofarbeyondtheastronautsthatreceivewidespreadmediacoverage.Therearemanysupportstaffontheground,suchasengineersmechanicsandresearchassistants.Althoughspaceexplorationdemandshugeinvestment,thespaceindustrycanactuallybringgreateconomicvalue.雖然太空探索需要巨額投資，但航天工業(yè)實(shí)際上可以帶來(lái)巨大的經(jīng)濟(jì)價(jià)值。gofarbeyond遠(yuǎn)超Moreover,