Ethanoyl
[化] 乙酰; 乙酰基
🗣️ 情景例句
The teacher flunked him in geography.
老师给他的地理打不及格。
Which one do you prefer?
你比较喜欢哪一个？
I counted seven old cars and three old refrigerators.
我数了一下，有7辆旧汽车和3上旧冰箱。