Nowherecouldconservationandincreasedefficiencyhavegreatereffectthanintransportation.Over70%ofU.S.oilproductiongoestopowermotorvehicles,andaccountsforaboutonethirdoftheourcarbondioxideemissions.Inresponsetotheenergycrisisintheearly1970s,automakers,underpressurefromthefederalgovernmentandtheconsumingpublic,significantlyimprovedthefueleconomiesofalltypesofvehicles.Fromthemid-1970stotheearly1990s,gaso
請幫我翻譯一段課文...有些難懂(拜託不要是翻譯機的那種) - 社會議題
· 2011-06-07Table of Contents
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