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English definition of “cast pearls before swine”

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cast pearls before swine

to offer something valuable or good to someone who does not know its value: I'm afraid you're casting pearls before swine with your good advice - he won't listen.
Translations of “cast pearls before swine”
in Chinese (Traditional) 把有價值的東西給不識貨的人, 明珠暗投,對牛彈琴…
in Chinese (Simplified) 把有价值的东西给不识货的人, 明珠暗投,对牛弹琴…
(Definition of cast pearls before swine from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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