Isomerization occur during bromine reaction, that is mean secondary allylic configuration changes into primary allylic configuration. 在溴化反应过程中存在分子结构重排, 即溴代仲位烯丙基构型向溴代伯位烯丙基构型发生转化.
Last December they hunted down and killed one of the gangsters.去年12月他们追捕到其中一名匪徒并将其击毙。A giant wildcat is being hunted after 58 lambs were butchered.一只大野猫在捕杀了58只羊羔后遭到猎捕。Those who do not come forward should be hunted down.对...