Bivalent
a. 二价的\\n[化] 二价的
✅ 同义词
🏥 医学释义
二价的（化学元素）
🗣️ 情景例句
Stretch up...and we're going to go left first ...
伸展……先向左……
Be my guest.
别客气。
he stooped to talk to a workman.After they had gone on,
途中，停下来与一个工人交谈，接着他们继续往前走去。