cast pearls before swine短语⁹⁶⁶⁷⁷⁺⁶ 基本例句 vi.明珠暗投把珍贵的东西送给不识货者;对牛弹琴 Don't cast pearls before swine. 不要对牛弹琴。 hjenglish He is not a computer expert; you don't need to cast pearls before swine. 他不是计算机专家，你不必对牛弹琴。 blog.sina.com.cn To cast pearls before swine is to give things of value to those who will not understand it. 明珠投暗的意思，就是把珍贵的东西送给不识货的人。 nciku