我们要保证清洁，禁止污染。
I wash the cloths in the kitchen to keep them clean.
我清洗厨房的洗碗布，保持它们的整洁和卫生。
Once your baby's teeth are in, it's up to you to keep them clean.
一旦宝宝有牙了，他的牙齿清洁问题就由你来决定了。
You should always keep them clean since they go on your eyes.
它们是要被放到眼睛里的，所以一定要保持清洁。
Most importantly, she said, is to keep them clean while wearing them.
最重要的是，在佩戴时要保持清洁。
Peopie also try their best to protect rivers and keep them clean.
人们也努力保护河流和持续它们的清洁。
Peopie also try their best to protect rivers and keep them clean.
人们也全力保护河流，使其保持洁净。
The oceans are important to all animals on the Earth. We must keep them clean.
海洋对于所有的地球上的动物都有着极其重要的意义。
All we need to do is to keep these pure and clean, and to use all we possibly can of them.
我们所要做的就是保持这种纯净和整洁，并尽我们最大的努力利好这些物质的可能性。
Keep them as clean and as sharp as your knives, and they will never steer you wrong.
保持你的刀清洁和尖利，决不会让你作错了。
I've instructed them to keep the room clean.
我已经命令他们保持房间干净。
I've instructed them to keep the room clean.
我已经命令他们保持房间干净。
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