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。