nub
n[sing]
the ~ of sth central or essential point of a problem, matter, etc (问题、 事情等的)中心,要点
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.
🗣️ 情景例句
Thank you for seeing me on such short notice.
谢谢您这样快就安排见我。
It does appear that way.
是的,看起来好象是这样的。
A new machine called 'The Revealer' has been invented and it has been used to detect gold which has been buried in the ground.