Propanamide
丙酰胺
🗣️ 情景例句
I don't get it.
我不懂你的话。
This week he took his first vacation from work in five years.
五年来，他本周破例第一次休假。
A drink? We've only just started! There are twenty more trees to be planted!
喝水？我们才刚刚开始！还有20多株树要种呢！