Alkanolamide
链烷醇酰胺
🗣️ 情景例句
Hail to the conquering heroes,
向进取的英雄们致敬，
We're having some friends over. What are you doing?
我们打算请几位朋友来玩。你打算干什么呢？
You see, the school will be expensive to run and we shall need a lot of good teachers.
你知道，办这所学校要花很多的钱，我们需要很多好教师。