Radars used to track storms can detect water in the atmosphere only once it has condensed into clouds or raindrops.
用于跟踪风暴的雷达只能在大气中凝结成云或雨滴后才能够探测到水。
Once the session was over, this person was asked to identify which of the four images had been used.
会议一结束，这个人就被要求辨认四张图片中哪一张被使用过。
This used to be an agricultural area and we already know that where the main lecture hall now stands, there once were farm house and barn that were erected in the late 1700s.
这曾经是一个农业区，我们已经知道，现在主演讲厅所在的地方曾经有建于18世纪晚期的农舍和谷仓。
Believe it or not, yellow was once used to mean stop.
信不信由你，黄色曾经用于表示停止。
You will remember that the Bank of England once issued two notes of a million pounds each, to be used for a special purpose connected with some public transaction with a foreign country.
你应该还记得，英格兰银行曾经发行过两张面额分别为一百万英镑的纸币，用于与外国的一些公开交易有关的特殊目的。
While 70 percent of 8th and 10th grade students used to go to the movies once a month or more, now only about half do this.
过去，70%的八年级和十年级学生每月看一次电影，甚至更多，但现在只有约一半的人这样做。
They used to meet once a week.
他们过去一星期见一次面。
It was once used to keep food in Europe.
在欧洲，它曾被用来保存食物。
There are a number of different recycling steps that allow materials to be used more than once.
有许多不同的回收利用步骤可以使材料被多次利用。
They are easy to break, most of them can be used only once.
它们很容易损坏，大多数只能使用一次。
He used to return home at least once a year, but hasn't been back for almost three years now because of the hard job in a crayon factory.
他过去每年至少回家一次，但由于在蜡笔厂工作太辛苦，他已经快三年没回家了。
The password is used once to generate a token.
使用一次口令以生成令牌。
This misapprehension, known to economists as the “lump of labour fallacy” , was once used to argue that women should stay at home and leave all the jobs for breadwinning males.
这种误解曾经被用来辩称，女人应该主持家务，养家糊口是男人的事。经济学家将这种误解称为“劳动总量固定”。
Experts say the rising food prices are partly due to climate change - and because fields once used to grow food crops are now used to cultivate crops for cleaner-burning biofuels.
专家们表示，粮价上涨的部分原因是气候的变化，另一个原因是过去被用来种庄稼的农田现在被用来种植生产洁净的生物燃料的作物。
An imposing whitewashed courthouse faces a large traffic roundabout circling an antiquated steam locomotive once used to haul copper-laden cars.
法院外墙被涂成白色，看起来庄严肃穆，对面是一个环形交通道口，一辆陈旧的蒸汽机车被围在当中，这辆车曾被用作运载铜矿。
We used go to the movies about once a week.
我们通常每周六大约去看一次电影。
Once you get used to this infrastructure, you will find it totally invaluable for all the projects you work on.
一旦习惯了这种基础结构，将发现它对于您从事的所有项目来说都是无价的。
This is typically used when statements have to be executed only once.
这种方法通常在语句只需要执行一次时使用。
I used to try everything at least once, just to see how it was like.
我关于尝试每样东西至少一次，就是要看看它是怎样的。
The bald, chemo-ravaged head - the public got used to that pretty quickly, just as we once got used to thinking of her as "the face of racism" or "the laughable image of illiteracy".
一个被化疗蹂躏得光秃秃的脑袋——公众似乎很快就接受了，正如我们曾习惯于将她认作“一张种族主义者的面孔”“可笑的无知者形象”那样。
Once you get used to using the relative path, it becomes second nature.
一旦您习惯了使用相对路径，它将变为第二属性。
In a nondescript building on the Southampton University campus, is a wind tunnel once used to develop the pioneering aircraft which defended Britain during the Second World War.
在南安普敦大学校园里，有一栋毫不起眼的大楼，这里有一个风洞，曾在二战期间用于开发保卫英国的先进战斗机。
Take them easy at first, but once you're used to hills, you can get a good pace going.
开始的时候可以放松，但一旦你习惯了斜坡，就应该用更好的步速去做。
But yesterday, the Republican leaders in the Senate once again used parliamentary procedures to block it.
但昨天，参议院的共和党领导人再一次利用国会议事程序阻挠该法案。
Using this method for installing and distributing applications takes a while to set up and get used to, but once running, it becomes almost automatic.
使用这个方法来安装和发布应用程序，需要一些时间来进行设置和熟悉，但是，一旦开始运转，它几乎是自动进行的。
He says they used to eat out once a week, but have had to cut back.
他说他们以往每周外出就餐一次，但现在不得不削减了。
I had to admit that although we used to play games once a week (or more!), we're now lucky to play them once a year.
我得承认尽管我习惯每周玩一次游戏(或者更多)，但我们也很幸运—现在一年玩一次了。
Come on Bear! The water's not so cold once you get used to it!
来吧，小熊，这水在你适应了之后就不会觉得冷了！
Nor to ignore the rows and rows of bunkers once used to shelter assault helicopters, their ageing concrete, for now, resistant to the effects of time and tropical weather.
无法忽视的还有那一排排曾经用来躲避直升机袭击的掩体，虽然已年代久远，但眼下仍能抵挡时间和炎热天气的侵袭。
Nor to ignore the rows and rows of bunkers once used to shelter assault helicopters, their ageing concrete, for now, resistant to the effects of time and tropical weather.
无法忽视的还有那一排排曾经用来躲避直升机袭击的掩体，虽然已年代久远，但眼下仍能抵挡时间和炎热天气的侵袭。
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