英语词汇mandatory level简单造句、意思、用法及例句-英语例句辞典

单词	mandatory level
例句	原声例句 PBS访谈环境系列 The Environmental Protection Agency cited better fuel efficiency among the reasons, saying the current mandatory levels are no longer appropriate. 环境保护局列举了提高燃油效率的原因，称目前的强制水平不再适用。
随便看	catalysts catalyst support catalytic catalytic action catalytic activities catalytic activity catalytic agent catalytically catalytic combustion catalytic converter catalytic converters catalytic cracker catalytic cracking catalytic, cracking catalytic cracking unit catalytic curing catalytic dehydrogenation catalytic effect catalytic hydrogenation catalytic, method catalytic method catalytic oxidation catalytic, oxidation catalytic performance catalytic properties

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