Allylene
(=methylacetylene)丙炔, 甲基乙炔
🔁 扩展释义
【化】 丙炔
🗣️ 情景例句
No, no, no, no.
不， 不 ，不， 不。
How long has it been since you've heard from your uncle?
自从你听到叔叔的消息有多长时间了？
What colour are they?
什么颜色的呢？