Covalent
a. 共有原子价的, 共价的
🗣️ 情景例句
I have other plans, Robbie.
我另有安排 ，Robbie。
Diamond cut diamond.
强中更有强中手。
Bad luck! said Mother. It doesn't matter!
“真糟糕！”妈妈说，“没关系！”