Polycompound
多组分化合物
🗣️ 情景例句
What's wrong?
怎么啦？
I tried to telephone you but I couldn't get through.
我试着打电话给你，但都没有打通。
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。