到来的出租车的声音压过了谈话的声音。The conversation was drowned by the arrival of the taxi.我明白她谈话的大意。I follow the drift of her conversation.我仅听到他们谈话的结尾。I only caught the fag end of their conversation....
He that would have eggs must endure the cackling of hens.要享乐就要吃点苦头.A speckled hen swaggered down the main street of the'settlement ", cackling foolishly.一只花母鸡沿着 “ 居民点”的大街一摇一晃地走着, 一面咯咯地傻叫.This alarmed the hen, which ...
这种燃料的例子是一甲肼和二硼烷.Examples of such fuels are monomethyl - hydrazine and diborane.手性唑硼烷酮能够催化不对称1, 3偶极加成反应并取得很好的效果.Asymmetric 1, 3 - dipolar cycloaddition can be strongly catalyzed by chiral oxazaborolidines.该不对称催化还原反应的控制步骤是...