Bitunicate
双囊壁的, 双囊壁组群的
🗣️ 情景例句
It's too noisy for some older people like Nat.
它对于像Nat这样的老人来说太吵了。
I'm not big enough.
我还不够大。
He came out of the library, a large book under his arm.
他夹着本厚书，走出了图书馆。