Isoalkane
[机] 异烷类
🗣️ 情景例句
Why, I didn't know that your grandfather was born in Germany.
你看 我竟然不知道您的爷爷出生在德国。
I'm afraid I can't get away from the meeting.
我恐怕难以从会议中抽身。
It's forbidden.
这是受禁止的。