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
How long do you intend to stay?
你打算在这儿呆多久？
Do you have some change?
你有零钱吗？
How did the bees know exactly in which diection to fly?
蜜蜂是怎样确切地知道朝哪个方向飞呢？