My team members and I are trying to solve this knotty problem.

我和团队成员都在想办法解决这个极其困难的问题。

I found this knotty plank in the warehouse.

这块多节的木板是我在仓库里找到的。

This kind of knotty plot confused readers.

这种错综复杂的剧情让读者一头雾水。

It was a very knotty problem.

那实在是一个棘手的问题

The new management faces some knotty problems.

新的管理层面临着一些棘手的问题。

It was a knotty question.

这是一个棘手的问题。

Under his leadership, many knotty problems were smoothly solved.

在他的领导下，许多伤脑筋的问题都迎刃而解。

The chemistry is knotty for me.

化学对我来说是很复杂难懂的。

This is a knotty passage.

这是一段复杂难懂的文字。