自1908年以来氯就被添加进饮用水当中。Since 1908, chlorine has been added to drinking water.氯用来给水消毒。Chlorine is used to disinfect water.加氯是为了杀死细菌。Chlorine is added to kill bacteria....
The hotels are full up, and the guests have had to go to this dinky little motel way out on Stewart Avenue.宾馆已经客满了,客人们不得不到斯图尔特街上这家偏远的小汽车旅馆里来。The design of high performance dustproof, the dinky maintenance.高性能防尘设计, 保养维护量极...