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！
