Coset
[计] 系
📖 牛津释义
coset
n
(mathematics 数) set that can be added to an existing set to produce a more inclusive larger set 傍系; 陪集.
🗣️ 情景例句
have become good friends, haven't you?
成了好朋友，不是吗？
When Greek meets Greek, then comes the bug of war.
两雄相争，难解难分。
This is because the surface of the earth is not flat but round.
因为地球表面不是平的，而是圆的。