I heard them laughing when I ran away.

我逃跑时听到他们在哈哈大笑。

youdao

I heard them singing a folk song when I came.

我来的时候听见他们在唱一首民歌。

youdao

I heard them singing a folk song when I came.

我来的时候听见他们在唱一首民歌。

youdao