lets clean the clssroom让我们打扫房间吧。
重点词汇
clean清洁的;干净的;洁净的;爱干净的;爱整洁的;无有害物的;无污染的。
The law would encourage companies to switch from coal to cleaner fuels.
该法律将鼓励企业转而使用比煤更加清洁的能源。
Countries cannot have it both ways: the cost of a cleaner environment may sometimes be fewer jobs in dirty industries.
各国不可能两全其美:环境更清洁的代价有时可能就是污染企业就业岗位的减少。
I'm always having to clean up after the children.
孩子们离开以后,我总得打扫一番。