True terrible not cast your pearls before swine, but a group of cows to you to play the piano.
真正可怕的不是对牛弹琴，而是一群牛对着你弹琴。
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。
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。
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