1203电大英语2翻译（本站推荐）.docx

1203电大英语2翻译（本站推荐）

第一篇：1203电大英语2翻译（本站推荐）四。英译汉：课文句子翻译（Unit1,Unit6）空气污染AirPollutionAirsuppliesuswithoxygenwhichisessentialforourbodiestolive.①Airis99.9%nitrogen,oxygen,watervaporandinertgases.②Humanactivitiescanreleasesubstancesintotheair,someofwhichcancauseproblemsforhumans,plants,andanimals.③Thereareseveralmaintypesofpollutionandwell-knowneffectsofpollutionwhicharecommonlydiscussed.Theseincludesmog,acidrain,thegreenhouseeffect,and“holes”intheozonelayer.④Eachoftheseproblemshasseriouseffectsonourhealthandwell-beingaswellasonthewholeenvironment.Onetypeofairpollutionisthereleaseofparticlesintotheairfromburningfuelforenergy.Dieselsmokeisagoodexampleofthisparticularmatter.Thistypeofpollutionissometimesreferredtoas“blackcarbon”pollution.⑤Theexhaustfromburningfuelsinautomobiles,homes,andindustriesisamajorsourceofpollutionintheair.⑥Someauthoritiesbelievethateventheburningofwoodandcharcoalinfireplacesandbarbequescanreleasesignificantquantitiesofsootintotheair.Anothertypeofpollutionisthereleaseofharmfulgases,suchassulfurdioxide,carbonmonoxide,nitrogenoxides,andchemicalvapors.Thesecantakepartinfurtherchemicalreactionsoncetheyareintheatmosphere,formingsmogandacidrain.⑦Smogisatypeoflarge-scaleoutdoorpollution.Itiscausedbychemicalreactionsbetweenpollutantsderivedfromdifferentsources,primarilyautomobileexhaustandindustrialemissions.Citiesareoftencentersofthesetypesofactivities,andmanysufferfromtheeffectsofsmog,especiallyduringthewarmmonthsoftheyear.Anotherconsequenceofoutdoorairpollutionisacidrain.Whenapollutant,suchassulfuricacidcombineswithdropsofwaterintheair,thewaterorsnowcanbecomeacidified.Theeffectsofacidrainontheenvironmentcanbeveryserious.Itdamagesplantsbydestroyingtheirleaves,itpoisonsthesoil,anditchangesthechemistryoflakesandstreams.Damageduetoacidrainkillstreesandharmsanimals,fish,andotherwildlife.Thegreenhouseeffect,alsoreferredtoasglobalwarming,isgenerallybelievedtocomefromthebuildupofcarbondioxidegasintheatmosphere.Carbondioxideisproducedwhenfuelsareburned.Plantsconve