Bivalency
二价
✅ 同义词
🗣️ 情景例句
I'm behind in my work.
我的工作进度落后了。
When I saw Mr. Jones,he was talking with John Smith.
当我看见琼斯先生时，他与约翰·史密斯正在谈话。
Wei Hua had a busy day yesterday.
昨天魏华很忙。