Covalency
[机] 共价
🗣️ 情景例句
What are you getting at?
你想说明什么？
I'm sorry I forgot your birthday, it completely slipped my mind.
我很抱歉忘了你的生日，我完全不记得了。
I'm not really interested in fishing.
我并不是真的对钓鱼有兴趣，