搞清的英文：
see into

The underlying reason for the failure remains unknown.
失败的根本原因尚未搞清。

The truth is sometimes difficult to get at.
有时真相不易搞清.

You have to know what's what and when to draw the line.
你必须搞清实质以及自己的底线。

I'm afraid you didn't quite catch my meaning. I'll say it once more.
也许你没有搞清我的意思，我再说一遍。

Dissected the plan afterward to learn why it had failed.
事后仔细分析那项计划以便搞清它失败的原因

Such specific mechanisms affecting enzyme synthesis have not yet been established in higher plants
这种影响酶的合成的特殊机理至今在高等植物中还未搞清。

In statesmanship,get the formality right;never mind about the morality.
作为政治(家的)手腕，应彻底搞清形式上的手续，至于道德则无需顾忌。

This is positive, you see? This is affirmative, you See? This is final, you see?
这是明确的，你懂吗?这是肯定的，你懂吗?这是不容更改的，你懂吗?

On seeing us, they hastened over.
他们看到我们，赶紧走了过来。

See to it personally, Commander.
你要亲自去处理，指挥官。

I'll see to it personally.
我会亲自处理的。

When you see him, book!
当他见到他时，迅速离开！