Question

have a hard time doing sth. 是什么意思啊？

Answer 1

have a hard time (in) doing sth. 做某事很困难
例：Most of us know what we ought to do, but have a hard time doing it.
我们大多数人都知道应该怎么做，但是做起来却不容易。

Answer 2

做某事很艰难

Answer 3

做某事有困难