Alkenoic acid
[化] 链烯酸
🧩 词语组成解析
🗣️ 情景例句
I'm going to use it for business.
我会在业务上用到它。
Who spoke a while ago?
刚才谁在讲话？
Before they were replaced by steamships,
在蒸汽船取代帆船之前。