Divalence
二价
✅ 同义词
🗣️ 情景例句
He is an orphan, so he is not sure which family name he should have.
他是个孤儿，因而不知道他自己姓什么。
The student has made tremendous progress.
这个学生进步非常快。
When a passing tanker rescued them five days later,
5天后，一条油轮从那儿路过，搭救了他们。