keep off是什么意思中文

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。