have the devil's own job

If you say that you had the devil's own job to do something or that you had a devil of a job doing something, you are emphasizing that it was difficult to do it.

（用于强调）需煞费苦心（做），要大费周折（做）

We had the devil's own job to persuade him to take part.

我们说服他参加可费了一番周折。

We had a devil of a job/time finding the place!

我们找这个地方可费了不少周折／时间！