We keep our valuables under lock and key.

我们把贵重物品锁起来收好了。

《牛津词典》

Plants keep our air and water clean.

植物能保持空气清新和水源清洁。

youdao

The sign said, "PLEASE KEEP OUR PARK CLEAN".

指示牌上写着“请保持我们公园清洁”。

youdao

Poor people,youth,people of color, so we try to keep our prices very,very low.

VOA: special.2009.04.27

And we want to divide all of that by our wavelength, and to keep our units the same we'll do meters.

我们想用波长除以所有这些，而且保持单位统一我们采用米。

麻省理工公开课 - 化学原理课程节选

So we wanna keep our inflation rate low which will generate a strong dollar or a dime.

因此，维持低通胀才是正道,这样才能让美元坚挺起来。

斯坦福公开课 - 经济学课程节选

Singapore's hawker centres started partly for hygiene reasons, and to keep our water pollution in control.

BBC: Why are there hawker centres in Singapore?

As for us, we choose secret option (c): keep our business and pleasure separate.

FORBES: More Thoughts on Renting Your Fun

This is a good agreement that will keep our economy growing and our people working.

NPR: Text of Bush's State of the Union Address