“hear the grass growing”别理解成“听见草在生长”，其正确的含义是特别机灵；特别敏锐；极端敏感。

【例句】
He walked alone to home at midnight. So he could hear the grass growing.
他在深夜一个人独自回家，所以他特别敏锐。

She was scared in the alley because she could hear the grass growing.
她在巷子里感到很害怕，因为她极端敏感。