溴化反应较不易发生.Bromination takes place less readily.溴化烷可以这样形成.Alkyl bromides can be produced this way.溴化氢加成的最后一步,是负离子亲核试剂的附加.The addition of hydrogen bromide involves the attachment of an anionic nucleophile in the final step...
I was very young and rebelling against everything.我当时非常年轻，对一切都表现出叛逆。Rebelling at waiting any longer for the meal, we left the restaurant.因为不愿再等下去, 我们离开了那个餐馆.We rebelling to think straight.我们热衷于叛逆,以致不能直接思考....
Keep good apples in perforated polythene bags.把好苹果放在有孔的聚乙烯袋中保存。Simply put them into a polythene bag and store them in the freezer for a day.只需把它们装进保鲜袋，在冰箱里储存一天即可。This polythene sheet should serve to keep out the rain for...