“Milk of human kindness”字面意思像牛奶一样的好心，真实含义“人的善良天性；恻隐之心”。

【例句】
Alice is a most generous woman, overflowing with the milk of human kindness.
爱丽丝是一位非常厚道的女人，充满恻隐之心。

Sally can't even hurt a fly - she's full of the milk of human kindness.
萨丽连一只苍蝇都不会伤害的，她是一个充满了同情心的人。