人们担心他的身体在排斥他4年前在一项移植中接受的一个肾脏。
It was feared his body was rejecting a kidney he received in a transplant four years ago.
岩层中的证据表明该地区在15,000年前曾经非常干旱。
Contained within the rock strata is evidence that the region was intensely dry 15,000 years ago.
大约2.5亿年前，在地球历史上最严重的一系列大灭绝中，几乎所有的生命物种都消失了。
Roughly 250 million years ago, in the worst series of mass extinction in Earth's history, almost all species of life simply vanished.
几年前，我在报纸的一个专栏中问了同样的关于搭便车的问题。
A few years ago, I asked the same question about hitching in a column of a newspaper.
几年前，在一次去纽约的旅行中，尤多拉·韦尔蒂决定带几个纽约的朋友出去吃饭。
On one of her trips to New York several years ago, Eudora Welty decided to take a couple of New York friends out to dinner.
在比Mush更年轻的遗址中，不少2600万年前只属于非洲大陆的哺乳科动物消失了。
A handful of Africa's unique island mammal families that were present 26 million years ago are absent from sites younger than Mush.
首尔在50年前的朝鲜战争中几乎被夷为平地，如今，通过规划控制，成为世界上第五大城市。
Seoul, nearly obliterated in the Korean War fifty years ago, was now the fifth biggest city in the world over planning controls.
从火星熔岩流上出现的少量陨石坑中，我们可以估计，在5亿年前，这个星球上的火山还很活跃——也许现在依然活跃。
From the small number of impact craters that appear on Martian lava flows, one can estimate that the planet was volcanically active as recently as a half-billion years ago—and may be active today.
史蒂文在几年前的一次交通事故中失去了一只手臂。
几年前，在百慕大的一次浮潜旅行中，我们遇到了一只名叫莱西的小猎犬，它喜欢捡石头。
On a snorkeling trip in Bermuda a few years ago, we met a terrier named Lexi, who liked to fetch rocks.
在消费者中，只有18%的人意识到生态时尚的存在，相比四年前的6%有所上升。
Among consumers, only 18% are aware that ecofashion exists, up from 6% four years ago.
在消费者中，只有18%的人意识到生态时尚的存在，这一数字相比四年前的6%有所上升。
Among consumers, only 18% are aware that eco-fashion exists, up from 6% four years ago.
在英语中，它始于1900年前后亨利·詹姆斯的晚期小说，和艾略特和艾兹拉·庞德的诗歌。
In English, it begins with the late novels of Henry James around 1900, in poetry with Eliot and with Ezra Pound.
问：在应对当今的大流行病威胁时，我们可以从30年前猪流感反应中吸取哪些教训？
Q: What lessons can we draw from the swine flu response 30 years ago, when dealing with today's threat of a pandemic?
在英国工业联合会的月度分销业调查中，32%的零售商报告称，销量比一年前更高，而47%的零售商说他们的销售额比一年前更低。
In its monthly distributive trades survey, 32% of retailers reported that sales were higher than a year ago, while 47% said they were lower.
我们一年前在我们第一个，数字化生产印刷中让网络商业化。
And we commercialize the Internet in our first digital production press one year ago.
或许你印象最深刻的成就确实是在12年前的工作中得到的…
Or perhaps your most impressive accomplishments were in a position you held 12 years ago.
是否困顿在一年前就已消亡的感情关系中？
五年前，我在各种会议中遇见的很多人都从没听说过这些概念。
Five years ago I was mostly meeting people at conferences who never heard of those ideas.
本书呼吁在个人自主和国家监管中寻求更好的平衡；放在几年前，这种思想还算偏离重心。
Its call for a better balance between individual autonomy and state oversight might have seemed off-centre just a few years ago.
在半睡半醒中，我记起了这个人——几年前我曾经帮他妻子做过一次阑尾炎手术。
Still half asleep, I reminded him that I had taken his wife's inflamed appendix out a couple of years before.
所以存款保险是至关重要的，在1970年前，在经纪服务业务中，对于对应账户还未有保护举措。
I think that deposit insurance is very important but we didn't have anything for corresponding accounts at brokerage services until 1970.
相对相对论本身就是在试着解释100年前一个异常现象中诞生的。
Special relativity itself came from trying to fix a big anomaly more than 100 years ago.
在几个不同类型的社区中，中间阶层家庭收入现在比30年前要低。
In several different types of communities, median family income is lower now than 30 years ago.
因此在几年前，我开始在我的课堂中规定的论文以外加入短文写作作业。
So a few years ago, I started slipping my classes short writing assignments alongside the required papers.
这些高出的回报中的某些部分会被过高的费用抵消；在20几年前，交易费用是相当高的。
Some of this excess return will have been eaten up by higher costs; trading costs were substantial until the last 20 years.
在英语里，这个单词出现于远在1100多年前阿尔弗雷德大帝的作品中。
In English the word shows up well over 1100 years ago in the works attributed to King Alfred the Great.
几年前，我在负责安全和性能工作的组织中工作。
A few years ago, I was in an organization responsible for security and performance.
几年前，我在负责安全和性能工作的组织中工作。
A few years ago, I was in an organization responsible for security and performance.
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