搭配 “prove difficult” 的意思是 “一件事做起来很困难”。在完成一项任务的过程中，当我们意识到事情比原本想像得要更加复杂、困难的时候，就可以使用 “something proves difficult” 这个表达。
在 “prove” 和 “difficult” 的中间也可以加表程度的修饰词语，比如：something proves more difficult than… 某件事做起来要比…更难。
“Prove difficult” 的后面也可以加不定式结构，变成 “prove difficult to do something”，用来谈论 “一件具体的事情实际做起来非常困难”。
- The business had offices in many different cities, so it proved difficult to coordinate all the teams and make sure they worked together.
这家公司在很多城市都设有办公室，所以事实证明要想协调各个团队，确保所有人共同合作是很困难的。 - I thought this report was going to be quick and easy to write but it's proving to be more difficult than I thought.
我本以为能快速、轻松地写完这份报告，但事实证明这比我预想的要难得多。 - We think we're extremely organised and ready to move house next week, but we're sure there are still many things we haven't anticipated. It will probably prove more difficult than we realise at the moment.
我们觉得自己非常有条理，一切就绪，准备下周搬家。不过到时候肯定还会有很多预料之外的事情要做。事实可能会证明，搬家比我们目前意识到的要困难得多。
