Nub
n. 小块, 瘤, 结节, 要点
✅ 同义词
📖 牛津释义
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
You'll feel better after a good night's sleep.
你好好睡上一觉就会好些。
I'm not really sure.
我不太清楚。
It's used for cutting.
用于切割。