在特殊的酸催化中, 不离解的酸不起作用.In specific acid catalysis, the undissociated acids do not contribute.所有的原子和分子系统都受光致电离和光致离解的影响.All the atomic and molecular systems are subject to photoionization and photodissociation.后者是由二氧杂环戊烷中活化较弱...
Zanzibar's fortunes declined after the islanders revolted against the sultanate in 1964.桑给巴尔岛的居民于1964年反抗苏丹统治，随后时局便不断恶化。There were mixed fortunes for French rugby teams on tour.参加巡回比赛的法国橄榄球队成绩有喜有悲。She kept up with th...
从1066年到17世纪，狐狸一直被视为害兽。From 1066 to the 17th century the fox was looked upon as vermin.它们的祖先是被培养来捕猎害兽.Their ancestors were bred to hunt and kill vermin.对农民来说,野兔是一种害兽,因为它吃幼嫩的作物.To a farmer a rabbit is vermin because it eat...