他们在玩耍的时候，男孩发现了一块看起来很奇怪的石头。

While they were playing, the boy found a stone which looked strange.

youdao

他们在玩耍的时候，男孩发现了一块看起来很奇怪的石头。

While they were playing, the boy found a stone which looked strange.

youdao