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勞而無功的詞語解釋

勞而無功láo’érwúgōng

[bay the moon;work hard but to no avail;accomplish little; fool's errand; milk the bull; preach to the winds wash a blackamor white] 費了力氣但沒收到成效

與不可,強不能,告不知,謂之勞而無功?!?span id="ia8l3xh" class="bold">《管子·形勢》

(好工具)

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