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
We were married almost fifty years.
我们结婚将近五十年。
You are fatter than I am.
你比我胖。
Excuse me, Miss Yang, she said.
“请原谅，杨小姐，”她说。