She felt her heart tremble every time he shot an unsuspecting bird as it was singing in the trees.

VOA: special.2010.04.03

He went out and saw his mum in the trees, in the clouds, or when the birds were singing.

他走出去，看到自己的母亲,在树上，在云里，在鸟儿的歌声中。

普林斯顿公开课 - 人性课程节选