tough proposition的用法和样例：
例句
- Take care, Jim is a tough egg to crack.
当心点，吉姆是个难对付的人。 - But of course when a guy serves well, you know, and he backs it up with a good volley behind, you know, he's tough to play for everyone.
但是当然，当一个人发球很好时，并且之后还能打出很好的截击球时，他对每个人都是非常难对付的。
词汇搭配
- a tough proposition [口]难处理的事[人...
