When he's happy just turning somersault on the ground, like a big ball rolling on the ground.

当他高兴的时候，就在地上翻跟头，像一个大皮球在地上滚动。

youdao

When he's happy just turning somersault on the ground, like a big ball rolling on the ground.

当他高兴的时候，就在地上翻跟头，像一个大皮球在地上滚动。

youdao