nub

名词 nub:

1. a small lump or protuberance
   同义词：nubble
2. a small piece
   同义词：stub
3. the choicest or most essential or most vital part of some idea or experience
   同义词：kernel, substance, core, center, essence, gist, heart, heart and soul, inwardness, marrow, meat, pith, sum, nitty-gritty

1. That's the nub of it.
   关键就在这里。
2. 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。

nub

n.（名词）
A protuberance or knob.
凸起物或门把
A small lump.
小肿块
The essence; the core:
要点；核心：
例句：
the nub of a story.
故事的要点

来源：
Variant of knub
knub的变体
probably from Low German knubbe
可能源自 低地德语 knubbe
from Middle Low German
源自 中古低地德语
variant of knobbe
knobbe的变体

【引伸】
nub.by
adj.（形容词）