它们叫做构象异构体,也叫做异象体.They are said to be conformational isomers also called conformers.然而 “ 立体异构”一词通常只限于镜象异构.The team'stereoisomerism " however, is generally restricted to mirror image isomerism.异构体被定义为化学式相同而结构不同的化合物.Is...
他能一面快速地吃饭,一面言辞强硬地说话,给同他一起就餐的人留下了很好的印象。His ability to talk tough while eating fast made a favourable impression on his dining companions.我十分强硬地向那些人宣称北约需要转变方向。I brashly announced to the group that NATO needed to be turned ...
她临死前几天开始吐血。She began to vomit blood a few days before she died.我开始吐血,我母亲吓坏了。I started spitting blood and my mother panicked.这位受伤的人吐血了.The wounded man spat out blood....