keep off是什么意思中文

　　例句：

　　I'm trying to keep off fatty foods.

　　我盡量不吃高脂肪食物。

　　They lit a fire to keep off wild animals.

　　他們點燃篝火防止野獸靠近。

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

　　我父親在場時最好不要談論政治。