Coordination bond
[化] 配位键; 配价键
🧩 词语组成解析
🗣️ 情景例句
There is still a week to go before the vacation begins.
现在距离假期还有一星期。
He has left already .
他已经离开了。
In those days, boxers fought with bare fists for prize money.
当时，拳击手们不戴手套，为争夺奖金而搏斗。