前人栽树, 后人乘凉

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((qián )(rén )(zāi )(shù )(hòu )(rén )(chéng )(liáng )(qián )(rén )(zāi )(shù )(hòu )(rén )(chéng )(liáng ))

(jiàn )(qián )(rén )(zhǒng )(shù )(hòu )(rén )(chéng )(liáng )”。

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●前人栽树, 后人乘凉(简体版)

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