什么东西在使用它的时候是满的，在他休息的时候是空的。

What is full when it's used and empty when it's at rest?

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在他休息的时候，柏波罗看到他的老朋友布鲁诺还在费力地运水。

During his rest, Boboro saw his old friend Bruno still wading through water.

youdao

在他休息的时候，柏波罗看到他的老朋友布鲁诺还在费力地运水。

During his rest, Boboro saw his old friend Bruno still wading through water.

youdao