Dehydrocyclization
脱氢环化(作用)
🗣️ 情景例句
I'd miss them a lot,
我会非常想念他们的，
May I use your typewiter?
我能用你的打字机吗？
It is only 380,000 kilometres away, and it has been visited by man already.
已经有人到过月球旅行了。