Cofibration
上纤维化
🗣️ 情景例句
Have they made it up yet?
他们和好了吗？
We're having some friends over. What are you doing?
我们打算请几位朋友来玩。你打算干什么呢？
but the paper was wrapped round a drum which rotated slowly.
根但是纸是卷在慢慢旋转的圆筒上的。