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He spent all his life in dropping buckets into empty wells. 他一生都是把水桶投入空井，做了些徒劳无益的事情。
drop buckets into empty wells 空井打水
He has spent all his life in letting down buckets into empty wells; and he is frittering away his age in trying to draw them up again. 他把一生花费于把水桶落到枯井里，如今又把残年消耗于把它们吊上来。
He has spent all his life in letting down buckets into empty wells;and he is frittering away his age in trying to draw them up again. 他把一生花费于把水桶落到枯井里，如今又把残年消耗于把它们吊上来。
Drop a bucket into an empty well. 空井打水，徒劳无益。
let down buckets into empty wells 空井打水
drop a bucket into an empty well 空井打水, 徒劳无益
He lowered a bucket into the well to get some water. 他将水桶放下井去取些水。
He let down a bucket into the well to draw water. 他把吊桶放进井里打水。
She let down the bucket into the well. 她把吊桶入下井里。
Mother tipped the slops out of the bucket into the sink. 母亲把脏水从桶里倒进洗涤槽中。
The shimmering stopped. Jonathan Seagull had vanished into empty air. 闪光不见了。乔纳森消失在空荡荡的天空中。
Through giving the analysis of the reasons of drop bucket in mine coal, the OOB theoretical model of drop bucket is proposed. 本文对煤矿主井坠箕斗事故原因进行了分析，建立了煤矿坠斗事故“OOB”理论模型。
As soon as he arrived he bucketed into his work. 他一到就忙着干起活来了。
The Man U faithful prefer to excrete of urine into empty winebottle,then return them to drinkin in the Stretford End. ( The west stand). 曼联铁杆喜欢在斯特雷福德看台(西看台)把小便排泄在空酒瓶里，然后再把它们喝下去。。
In this case,it is difficult to stuff norfloxacin and excipient into empty capsules. 为此,根据空胶囊型号不同,产地不一及诺氟沙星和赋形剂比重不同等实际问题,进行了实验研究。
How to effectively make low producing well and "empty well" become high-yielding well is the object of petroleum exploration and development. 有效地将这些资产盘活,变废为宝,使低产井成为高产井、“空井”成为高产油气井是投资石油勘探开发的目标。
The Man U faithful prefer to excrete of urine into empty winebottle, then return them to drinkin in the Stretford End.( The west stand). 曼联铁杆喜欢在斯特雷福德看台(看台)小便排泄在空酒瓶里，然后再把它们喝下去。。
Will use recursion to acquire the lock on each bucket and rehash the elements from each bucket into a new, larger hash table. 就使用递归获取每个bucket上的锁并重排每个bucket中的元素到一个新的、更大的hash表中。
Warm pot. Water into empty pot first so hot pot temperature. And then water poured into the "tea boat" a purple sand tea tray. 温壶。先将开水冲入空壶，使壶体温热。然后将水倒入“茶船”一种紫砂茶盘。