英语翻译

Eachyearthereisanincreasingnumberofcarsonroadsandstreetsasmillionsofnewcarsareproduced.OneoutofeverysixAmericansworksatputtingtogetherthepartsofcars,drivingtrucks,buildingroadsorfillingcarswithgas(汽油).Americanwon'tlivewithoutcars!

MostAmericansfindithardtothinkwhatlifewouldbelikewithoutacar.However,somehaverealizedtheseriousproblemofairpollutionbycars.Thepollutedairispoisonous(有毒的)anddangeroustohealth.

Onewaytogetridof(排除)thepollutedairistobuildanewkindofcar.That'swhatseveralofthelargecarfactoriesaretryingtodo.Buttobuildacleancariseasiersaidthandone.Progressinthisfieldhasbeenslow.

Anotherwayistotaketheplaceofthecarengine(发动机)bysomethingelse.Engineersarenowworkingonsomenewcars.Manymakersbelievethatitwilltakeyearstodevelopapracticalmodelthatpleasesman.

Topreventtheworldfrombeingpollutedbycars,we'llhavetomakesomechangesinthewaymanyofuslive.Americans,forexample,havetocutdownonthenumberoftheircars.Theyareencouragedtotravelandgotoworkbybike.Ridingabikeisthoughttohelpkeeptheairclean.

Butthischangedoesnotcomeeasily–alargenumberofworkersmayfindthemselveswithoutjobsifacarfactoryclosesdown.Andtheproblemofairpollutionwouldbecomelessimportantthanthatofunemployment(失业).

Althoughcarshavebroughtusabetterlife,theyhavealsobroughtusnewproblems.