Pentavalency
五价
🗣️ 情景例句
I don't think you're the right person for me.
我觉得咱们不合适。
Janet got mad when she heard the false story.
珍妮特听到了虚伪的话，因而大发雷霆。
When did you have a meeting?
你们什么时候开的会？