Ethylenic bond
[化] 烯键
🧩 词语组成解析
a. ethylene的变形
🗣️ 情景例句
Welcome, Mr. Stewart.
欢迎， Stewart先生。
Let me direct that question to the manager.
让我直接问经理好了。
Ripe fruit falls from the trees and you never have to work.
成熟的水果从树上掉下来，人们根本无需劳动。