Norbornene
[化] 降冰片烯
🗣️ 情景例句
We love having you here,
我们喜欢你们住这里，
How long will it take you to make it?
你要多久才能做好它？
I'm sorry to hear that. I hope you're better now.
听说你病 了，我心里很不好受。我希望你现在好些了。