2) keep hands clean
保持手部清洁
3) Keep the room clean.
保持室内清洁。
4) Keep the classroom clean.
要保持教室清洁。
5) cleaning and keeping clean
清洁保洁
1.
The quality of cleaning and keeping clean is very important to lubricating oil washing of Italian compressor system and quality and time period of overall compressor construction.
文章介绍了大型压气站工艺管道清洁保洁工作的具体做法。
6) For cleanliness,please change your shoes.
为保持清洁,请您换鞋.
补充资料：了手
〈方〉（事情）办完；了结：只要这件事一～，我就立刻动身。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条