美国驾车一族和企业今年开始大幅减少燃料开支，到7月份时，全美汽油平均价格已大幅攀升至超过每加仑4.10美元。
U.S. commuters and companies began sharply paring fuel purchases this year as pump prices soared to over $4.10 a gallon nationwide by July.
芳香族化合物，如芳胺、苯酚和氨基苯酚等有机化合物，通常用于保持橡胶的弹性和汽油中的黏性沉淀物。
Aromatic compounds such AS aromatic amines, phenols, and aminophenols delay loss of elASticity in rubber and gummy deposits in gASoline.
含催化馏份的车用汽油，烯烃含量大，用荧光指示剂吸附法不易测准汽油的族组成。
As the alkene content of motor vehicle petrol containing catalytic fraction is large, it is difficult to measure accurately by the fluorescent indicator adsorption method.
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