Bicomplex
二重复形
🗣️ 情景例句
Oh dear! What a pity!
啊！真遗憾！
I'd like to have you come to my house for dinner sometime.
改天请到我家来吃饭。
While the men had been working inside the ship, the air-line had been giving off oxygen.
当工人们的在船舱里干活时，供气管一直在排放氧气。