Acroleic
a. 丙烯
🗣️ 情景例句
How do you do?
你好。
I'm going shopping because I need to buy some clothes.
我要去购物，因为我需要买一些衣服。
But when the train dawdled at station after station, I began to wonder,
但是，当火车一站接着一站往前蠕动时，我便产生了怀疑。