保持清洁
Keep your hands clean if you want to touch this baby.
需要清洁和整理
I need to change and clean up.
主动帮忙清洁
Aunt Mary volunteered to clean up the kitchen.
快刀切得整齐
A sharp knife makes a clean cut.
清洁的环境
There is a clean and tidy room.
清洁的重要性
Cleaning is important for our health.
爱护公物，保持整洁
We should take good care of public property and keep everything clean.
春风像清洁工人
Spring breeze is like a cleaning worker, sweeping away the dust with a magic broom and making the city clean and beautiful.
这些句子涵盖了不同的语境和用法，适合四年级上册的学生学习和使用。希望这些例子对你有所帮助!
