nub

The nub of the matter is that business is declining.

事情的实质是工商业在萎缩。

The spokes of the wheel diverge from the nub.

轮辐从轮毂向四周分出.

The nub of the problem is our poor export performance.

问题的关键是我们出口贸易方面太差.

That's the nub of it.

关键就在这里.

Here we reach the nub of the argument.

现在我们谈到了争论的核心部分。

She respected Andrew's wisdom, his knack of going directly to the nub of any situation.

她遵重安德鲁的才智和他在任何情况下都能一语道破的本领.

That, I think, is the nub of the problem.

我想那才是问题的要害。