People who lend you books expect you to keep them clean.

借给你书的人希望你保持书的干净。

youdao

Now, we have to shave our heads to keep them clean without the use of water.

现在，我们必须剃光头，从而在不使用水的情况下保持清洁。

youdao

We must keep them clean.

我们要保证清洁，禁止污染。

youdao

Most NILT respondents (83%) agreed there comes a time when all you can do for someone with dementia is keep them clean, healthy and safe.

BBC: Northern Ireland

It urged people to not eat, drink or smoke while tending to a pet rodent, to refrain from kissing it, to cover cuts on hands before handling them and to keep them in clean cages away from rooms where food is prepared and eaten.

BBC: Rat infection: North Wales owner catches hantavirus