Acetylic
a. 乙酰基群的
🗣️ 情景例句
I got it!
我知道了。
About how long does it take?
大约要坐多久？
The English understand each other, but I don't understand them! Do they speak English?
英国人之间相互听得懂，可我却不懂他们的话！他们说的是英语吗？