Covalency
[机] 共价
🗣️ 情景例句
I'm sorry, I didn't get your name.
对不起，我没听清楚你的名字。
Self-confidence is the first requisite to human greatness.
人类的伟大，首要的是要有自信。
Hello, Sam. Come in.
你好，萨姆。进来吧。