She crumpled the letter up into a ball and threw it on the fire.

她把那封信揉成一团扔进了火里。

《牛津词典》

If you roll a ball up a slop, it will roll down again.

如果你把球滚上斜坡，它还会滚下来。

《新英汉大辞典》

If you throw a ball up, it will come down again.

假如你把一个球往上抛，它还会掉下来。

youdao

If you throw a ball up, it will come down again.

假如你把一个球往上抛，它还会掉下来。

youdao