Allylurea
烯丙基脲
🗣️ 情景例句
Thank you. I don't believe this.
谢谢。我简直不敢相信。
There have been a lot of changes here in the last 20 years.
在这20年里这里有很多变化。
The boy was too nervous to speak.
那男孩紧张得说不出话来。