keep them off是什么意思

相关例句：

I'm trying to keep off fatty foods.

我尽量不吃高脂肪食物。

They lit a fire to keep off wild animals.

他们点燃篝火防止野兽靠近。

It's best to keep off politics when my father's around.

我父亲在场时最好不要谈论政治。

I managed to stick to the diet and keep off sweet foods.

我设法坚持节食，不吃甜食。

Keep off the grass, please!

请勿践踏草坪！