Bivalent segmer
[机] 二价链节
🧩 词语组成解析
a. 二价的\\n[化] 二价的
链段
🗣️ 情景例句
The first chopsticks were made from bone and jade.
第一批筷子是骨头或玉制成的。
What did you have for lunch?
你中午吃些什么？
This is my friend, Ann. Ann, this is Uncle Wang.
这是我的朋友安。安，这是王叔叔。