Septavalency
(=septavalence)[化]七价
🗣️ 情景例句
It's OK. I'm sure they meant well,
没有关 。我敢说他们有心帮忙
We never imagined that John would become a doctor.
我们从来没想象约翰将成为一位医生。
That's a terrific idea!
真是好主意！