Like I said before, Uranium-Lead Dating has been with us for a while.
就像我之前说到的，铀铅年代测定法已经存在一段时间了。
Before a stand-in from his office literally stood in for the mayor while he conducted official business.
在他的办公室里有一个替身，意思就是在市长处理公务时代替他。
Some people like small talk in a meeting before digging into important matters, while others are more straightforward.
有些人喜欢在深入讨论重要问题之前在会议上闲聊，而有些人则更直截了当。
While cutting away a tumor deep in the brain, she watches the movement of her surgical tools in a computer graphics image of the patient's brain taken before surgery.
在切除大脑深处的肿瘤时，她通过手术前拍的一份计算机图形图像来观察手术工具在病人大脑中的运动。
For a while, I found myself in a surprising situation as I faced before.
有一段时间，我发现自己陷入了和以前一样令人惊讶的境地。
My Russian friend, Andrey always looks around and thinks for a while before leaving home.
我的俄国朋友安德烈在离开家之前，总是环顾四周，沉思片刻。
It'll be a goodish while yet before I've finished.
我还得花很长时间才能完成。
A little while before, Leip had been in the arms of a pretty greengrocer's daughter nicknamed Lili.
片刻之前，莱普还在一个小名叫丽莉的漂亮姑娘的怀抱中，她是一个蔬菜水果店主的女儿。
Some writers create an entire work before going back to read what they have written, while others may rewrite a single paragraph many times before moving on.
有些作家在回头阅读之前已经创作了一部完整的作品，而另一些人在继续写作之前可能会把其中的一个段落重写很多次。
She studied for a while before brushing teeth and having breakfast.
她在刷牙和吃早餐之前学习了一会儿。
The mishap occurred when the single-engine aircraft was caught by a gust of wind while hovering a few feet above the ground before landing.
事故发生时，这架单引擎飞机正在离地几英尺的空中悬停准备降落，此时遇到了阵风。
There before the door stood a neat new chair, while the old man was busy making a second.
门前放着一把整洁的新椅子，老人正忙着做第二把椅子。
After a while, he turned around again and called louder than before,"Good-by, Master."
过了一会儿，他又转过身来，比刚才更大声地喊道：“再见了，主人。”
When they are asked, they often think for a while before answering.
当被问到这个问题时，他们通常会想一会儿才回答。
They are making progress, but it will be quite a while before any vaccines are ready.
他们取得了进展，但要研制出疫苗还需要相当长的一段时间。
He jumped up and cleaned his eyes for a while before he recognized me. Then he opened the package hurriedly, gave my shoes back to me, and said, "I am sorry, sir."
他跳了起来，清理了一会儿眼睛才认出我来。然后他赶紧打开包裹，把我的鞋子还给我，说：“抱歉，先生。”
According to a study by Australian National University, Australian children and Chinese children have the same level of eyesight before they start school, but once they enter primary school, Chinese children only spend about an hour a day outside, while Australian children spend three to four hours each day in the sunshine.
澳大利亚国立大学的一项研究显示，澳大利亚的孩子和中国的孩子在入学前的视力水平相同。但是一旦他们进入小学，中国的孩子每天只会在户外度过一个小时，而澳大利亚的孩子每天在阳光下待三到四个小时。
While 53% believe men will continue to hold more top executive positions in business in the future, 44% say it's only a matter of time before as many women are in top executive positions as men.
虽然53%的人认为未来男性将继续担任更多的高管职位，但仍有44%的人认为，担任高管的女性数量达到与男性数量一样多只是时间问题。
A process is simply an object that does something, then sometimes waits for a while before it is ready to do a next thing.
一个进程只是一个对象，它完成某些任务，随后在它准备完成下一个任务之前有时会等待一会儿。
Whatever the case, it makes good sense to keep trying for a while before giving up.
无论是哪种情况，在放弃之前再尝试一段时间是有意义的。
Therefore, it could be a while before the shipping schedule is available.
因此，运送时间表使用前需要一段时间。
A corollary of the previous tip is this: Wait a while before constructing an Armory.
前面提到的必然的结果是：在建造一个军械库之前保持等待。
Remember that HTML5 is still a W3C working draft, and it might be a while before it becomes a full recommendation.
记住，HTML5仍然是W3C的工作草案，在它成为一个完整的建议之前可能还需要一段时间。
He says that prices will fall by 6% or so in 2011 and will then languish for a while before gradually recovering.
他说，2011年房价将继续下跌6%左右，然后会底部徘徊一段时间，然后再开始逐渐回升。
At her worst point, Danns would have a bottle of wine before work, half a bottle while getting ready, and drink steadily through her shift.
最坏的时候，丹纳斯开跳以前已经喝了一瓶酒，准备的时候又喝掉半瓶，跳舞的时候还是不停地喝。
An end product is the goal, but it will probably be a while before I can release one.
最终的开发成品是我的目标，但真正要发布一个正规版本可能还是需要花上一些时间。
A: "We had been working closely with him on his presentation for a while before the concept of a movie was proposed.
我们为他的陈述项目近距离合作了一段时间，直到后来有人提议做一部电影。
I can start it, because it will take a while before it stops.
我可以旋转它，因为我知道在停止之前，还得一会。
Each time you start a new task it takes time to "warm up", you have to gather all the materials you need and it takes a while before you find a flow.
每次你开始一项新任务之前，你都需要“预热”，你需要整合所有你需要的材料并且在你弄好之前这将会花费你一点时间。
We'll see some very strong storms and winds for a little while before it weakens again.
在她再次减弱之前的一段短暂的时间里，我们将会看到一些剧烈的风暴及强风天气。
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