同学你好，该知识点来自沪江网校《BEC商务英语初、中、高级连读【签约 双旦特惠班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好

cut down
1.削减
He tried to cut down on smoking but failed.
他试图少抽烟,但没成功.
2.缩短
Cut down the article so as to make it fit the space available on the paper.
把文章缩短一些,这样就能排进报纸有限的版面中.
3.砍倒
cut down the tree

cut off
1.切除
He had a finger cut off by a machine while working.
他在工作时被机器切掉了一个手指.
2.切断;中断
I was cut off on my line to London.
我打伦敦长途时,电话线被切断了.
3.使死亡
He was cut off in his prime.
他在壮年时过世.

祝学习愉快~