【英语翻译一篇文章,谢谢Mostoftheenergyweuseforheating,lighting,transportationandmanufacturing(制造业)comesfromfossil(化石)fuels.Thesearecarbon-basedfuelsfromoil,coalandnaturalgas.Whenweburnthesefuelswere】

　　英语翻译一篇文章,谢谢

　　Mostoftheenergyweuseforheating,lighting,transportationandmanufacturing(制造业)comesfromfossil(化石)fuels.Thesearecarbon-basedfuelsfromoil,coalandnaturalgas.Whenweburnthesefuelswereleaseheatwhichprovidestheenergy.

　　Therearethreemaindisadvantagestousingthesefuels.Firstly,theyarecausingclimateproblemsbecauseoftheGreenhouseEffect.Whenweburnfossilfuelstheyproducecarbondioxidewhichcausesglobalwarming.Secondly,whenwehaveusedupallourcoal,oilandnaturalgas,wewillhavenothinglefttoburn.Thirdly,theyarenotveryefficient.Theinternalcombustionengine(内燃机)thatweuseinmostcars,trucksandbuses,forexample,isonlyabout14%efficient.

　　Scientistsareworkingonanotherfuel—hydrogen.Thereareacoupleofadvantagestousinghydrogenasafuel.Firstly,becausetwo-thirdsoftheearth'ssurfaceiswaterandwaterismadeofhydrogenandoxygen.Thereisanalmostunlimitedsupplyofhydrogen.Secondly,burninghydrogendoesnotcauseglobalwarming.Thirdly,itismuchmoreefficientthancarbon-basedfuels.

　　Unfortunatelythereareproblemswithhydrogenatthepresenttime:thereistheproblemofseparating(分离)itfromwatercheaply,andthereisthedifficultyofstoringit.Itcanbestoredunderpressurebuthighpressuretanksarefarfromsafe.Itcanalsobestoredasaliquidbutonlyatextremelylowtemperatures.Itseemslikely,therefore,thattherewillhavetobeacompletelynewtechnologybeforehydrogenreplacesfossilfuels.Solvingtheseproblemsisanurgent(急迫的)matter.AlthoughChina,IndiaandAustraliahavehugeamountsofcheapcoal,andtherearestilllargeoilandgasreserves(储藏量)elsewhere,theeffectsontheplanet’sclimatewillbebadiftheyareused.

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