Coalgebra
上代数
🗣️ 情景例句
Wait with your pictures for a second.
先别忙着你的摄影。
The telephone is ringing,would you answer it,please?
电话正在响,你接吗？
After that they pressed a piece of paper on top, and printed a whole page of a book.
然后，再把一张纸压在上面，就印出了一整页书。