Propenoic acid
[化] 丙烯酸
🧩 词语组成解析
🗣️ 情景例句
I completely agree.
我完全同意。
Guess how old I am.
猜测我有多大。
So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish.
从测定海深到测定鱼群，这一进展比较容易。