Dicyclopentadiene
二环戊二烯
🗣️ 情景例句
I see you're in a good mood.
我看你心情很好。
They will miss him very much when he leaves home for the first time.
李明第一次离开家，他们会非常想念他的。
Such extreme cases must probably be taken with a grain of salt,
这种极端的事例虽不可全信，