1.call off 取消；依次叫名

Will you call your dog off, please?
请你把狗唤走好吗?

The music in the next classroom called off his attention from his teacher.
隔壁教室的音乐使他分散了听老师讲课的注意力。
2.in debt 负债；欠情

Gambling laid him in debt.
赌博使他负了债。

Bad management will land the company in debt.
经营不善会使公司负债。

3.keen to 热衷于

So the real question is not over the tenets of their political religion, but why some Tories are so keen to find one.
因此真正的问题不是关于他们的政治教条的问题，而是为何他们这么热心要去找一个教条的问题。

She insists, however, that it was precisely because of her past that she felt so keen to do this job.
她坚持认为，正是因为她过去的经历才使得她如此热心于这份工作。

4.focus on 集中于

If you focus the sun's rays on dry wood with a burning-glass, it will start burning.
如果你用取火镜使太阳光线在聚焦在干木头上，木头就会燃烧起来。

Our meeting focuses on the question of women's right.
我们会议的重点是妇女权利问题。