cast pearls before swine
US /kæst pɜrlz bɪˈfɔr swaɪn/
UK /kæst pɜrlz bɪˈfɔr swaɪn/
1.
對牛彈琴, 把珍貴的東西給不識貨的人
to offer something valuable or good to someone who does not appreciate it or cannot understand its worth
:
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Trying to explain advanced physics to him is like casting pearls before swine; he just doesn't get it.
試圖向他解釋高級物理學就像對牛彈琴；他就是不明白。
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She felt like she was casting pearls before swine when she shared her intricate artwork with the uninterested crowd.
當她向不感興趣的人群展示她精美的藝術品時，她覺得自己是在對牛彈琴。