Unsaturated bond
[化] 不饱和键
🧩 词语组成解析
a. 没有饱和的, 不饱和的
🗣️ 情景例句
It's so good to have you home again ...
真高兴 ，你又回家了……
Could you give me an indication of the price?
您能提供一个参考价吗？
He suddenly appeared in the party.
他突然在晚会上出现了。