擔(dān)雪填井挑雪填井dān xuě tián jǐngas futile as trying to fill a well with snow
? 納下表章不奏，只是行移鄰近州府， 催趲各處徑調(diào)軍馬， 前去策應(yīng)， 正如～一般。(《水滸全傳》1012) They decided not to forward the petitions. They only notified a few neighboring prefectures and urged them to send reinforcements and relief. This was as futile as trying to fill a well with snow. 擔(dān)雪填井dān xuě tián jǐnɡ用雪去填井。比喻做無用功，白費(fèi)力氣。pour water into a sieve,plough the air, work in vain |