1. 先弄清他確實有錢再把汽車給他。
   Don't let him have the car until you've seen the colour of his money.
2. 她非要弄清是誰的責任不可。
   She made it her business (ie special task) to find out who was responsible.
3. 我們已弄清楚是誰干的了。
   We've sussed (out) who did it.
4. 弄清楚合同的條件是什么。
   Find out what the conditions of the contract are.
5. 很難弄清楚他們那套官僚體制全部細微的層次分別。
   It was hard to understand all the minute gradations of their bureaucracy.

弄的英語翻譯：

清的英語翻譯：