1.
Wash often. Keep clean.
常清洗、保持清洁。
2.
A reading room should always be kept in order.
阅览室应经常保持清洁。
3.
"Keep clean. Here we mean personal cleanliness, cleanliness in the home and at work place, and a clean surrounding."
保持清洁。这里我们说的是个人清洁，家中及工作地点的清洁和环境清洁。
4.
Food preparation areas must be kept clean.
制作食物的场所应保持清洁.
5.
Keeping clean is a safeguard against disease.
保持清洁是抵御疾病的防护措施。
6.
train (a pet) to live cleanly in a house.
训练宠物使其能在室内保持清洁。
7.
I'll keep out earth clean and beautiful.
我将使地球保持清洁美丽。
8.
He didn't keep the cut clean and infection set in.
他没有把伤口保持清洁，因此受感染了。
9.
To start with, the computer room must be kept very clean.
首先，计算机工作室必须保持清洁。
10.
The town where she lived had to be kept clean and sweet.
她住的镇上必须保持清洁、芳香。
11.
The sidewalk was hosed every day to keep it clean.
人行道每天都用水管冲刷以保持清洁。
12.
There is no way to keep the place clean.
这无法保持此地清洁。
13.
Operation Committee of Keep Hong Kong Clean Campaign
保持香港清洁行动委员会
14.
Keep quiet and pay attention to cleanliness.
保持室内安静,注意清洁卫生。
15.
For one thing they keep the water clean
一方面，他们可以保持水的清洁。
16.
Keep the supply plug of the set clean and free of foreign matter.
保持电源插头处清洁,无杂物。
17.
They even sought to keep the environs clean and the drains unpolluted.
他们还能保持环境清洁，而不污染水道。
18.
Help us to keep the tube litter free
请协助我们,保持地铁清洁卫生