Ecologists argue that the benefits of treating sewage with disinfectants are doubtful.生态学家认为用消毒剂处理污水是否有益值得怀疑。Other substances used to prevent disease or infection include disinfectants and germicides.用来预防疾病或感染的其它物质有消毒剂和灭...
I'd been a fool letting him snow me with his big ideas.我真蠢，居然被他的胡乱吹嘘给蒙蔽了。Lazy and incompetent police officers are letting the public down.懒惰兼无能的警官令公众失望。I'm going to stop letting drugs and drink rule my life.我决心...