劳而少功的相关例句

劳而无功 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] 费了力气但没收到成效。

劳而少功，汉语词语，意思是花了力气却只收到微小的效果。