To crack this hard nut, I would like to propose several practical recommendations as follows.

为解决这个难题，我想提出如下几点实用的建议。

youdao

This problem is a hard nut to crack.

这个问题是块难啃的骨头。

youdao

Jeff: This is indeed a hard nut to crack.

杰夫：这实在是一个棘手的问题。

youdao

Jeff: This is indeed a hard nut to crack.

杰夫：这实在是一个棘手的问题。

youdao