例句與造句

1. the paper discusses the harm and disposal of several types of laboratory wastes that often occured, and also points out that laboratory waste must he treated efficiently so as to protect the environment and present unexpected accident
   摘要論述了實(shí)驗(yàn)室?guī)追N常見廢棄物的危害及處理方法，指出了廢棄物必須經(jīng)過有效處理，才能利于環(huán)境保護(hù)，防止意外事故發(fā)生。
2. the paper discusses the harm and disposal of several types of laboratory wastes that often occured, and also points out that laboratory waste must he treated efficiently so as to protect the environment and present unexpected accident
   摘要論述了實(shí)驗(yàn)室?guī)追N常見廢棄物的危害及處理方法，指出了廢棄物必須經(jīng)過有效處理，才能利于環(huán)境保護(hù)，防止意外事故發(fā)生。
3. It's difficult to find laboratory wastes in a sentence. 用laboratory wastes造句挺難的