cut up cut down cut off的区别

cut up cut down cut off的区别

　　例句：

　　You should cut down on fats and carbohydrates.

　　你应该减少摄入脂肪和碳水化合物。

　　They ordered that for every tree cut down two more be planted.

　　他们要求每砍伐一棵树就要补栽两棵树。

　　We're trying to cut down on the amount of paperwork involved.

　　我们正在努力降低有关此事的文书工作量。

　　I won't have a cigarette, thanks ─ I'm trying to cut down.

　　谢谢，我不抽。我现在尽量少抽烟。