call for sth
需要某物
The situation calls for an immediate response
情况需要立刻的反应
come down to sth
回转到最简单的因素
It all comes down to the fact that we don't have the resources for this project.
回转到最简单的事实是我们没有做这个项目的资源。
come up against sth
遇到麻烦或问题
We frequently come up against problems of this kind.
我们频繁的遇到这种问题。
let up
变得较和缓
Business usually lets up over the Chinese New Year period.
事情通常在中国新年期间变得较和缓。
look into sth
调查某事
We need to find someone to look into this and find out what the problem is.
我们需要找一些人调查这个，找到问题的所在。
make sth. up
弥补某事
If we work overtime we can make up the delay.
如果我们一直工作，我们可以弥补耽误的时间。