The train has arrived. It arrived half an hour ago.
火车已经到了。它是在半小时前到的。
The ability to prevent and treat AIDS has advanced beyond what many might have hoped over two decades ago.
如今人们预防和治疗艾滋病的能力已经超过了二十多年前许多人的期望。
Experts in public health accepted this idea decades ago, but until now no one has been able to show that a woman's ability to read in itself improves her children's chances of survival.
几十年前，公共卫生专家就接受了这一观点。但到目前为止，还没有人能够证明女性的阅读能力本身就能提高孩子的生存几率。
Muslims believe that Koran has maintained its original form since it was revealed to the Prophet Mohammad, 14 centuries ago.
穆斯林认为，自从14个世纪前《古兰经》被先知穆罕默德发现以来，它一直保持着最初的形式。
He has achieved what he set out to do three years ago.
他已经完成了3年前开始努力做的事情。
We were divorced two years ago and she has since remarried.
我们两年前离了婚，之后她又再婚了。
He says the death of his father 18 months ago has given him a new perspective on life.
他说１８个月前他父亲的去世使他对人生产生了新的看法。
She had a sort of breakdown some years ago, and since then she has been very shy.
她几年前曾遭遇精神崩溃，从那以后她一直怯生生的。
Life today is much easier than it was hundreds of years ago, but it has brought new problems.
今天的生活比几百年前便利得多，但也有了新的问题。
In fact, the Tower of London was built a thousand years ago, while the Tower Bridge only has a history of over one hundred years.
事实上，伦敦塔是在一千年前建造的，而塔桥只有一百多年的历史。
With the opening of Alfie's in April, and others such as The Pawn, two years ago, modern British food has made its way to Hong Kong.
两年前，随着阿尔菲和典当等其他餐厅在4月份开业，现代英国美食开始进军香港。
As much as a third of the total tree cover has been lost since agriculture began some 10,000 years ago.
自从一万年前农业开始发展以来，已有三分之一的树木被砍伐殆尽。
A beautifully preserved boat, made around 3,000 years ago and discovered by chance in a muddy hole, has had a profound impact on archaeological research.
（考古学家）在一个泥泞的洞里偶然发现了一艘大约3000年前制造的保存完好的船只，其对考古学研究产生了深远的影响。
All stir has ceased for some time, for every gallery has long ago been packed.
所有的骚动已经停止了一段时间，因为每一个看台都早已挤满了人。
Since a long time ago, Halloween has been connected with the ghosts.
从很久以前，万圣节就与鬼联系在一起。
It's also a trend that emerged decades ago and has simply stuck.
这也是数十年前兴起的一种趋势，只不过保留到现在而已。
Lily, an Australian girl, has been living in China since three years ago.
澳大利亚女孩莉莉从三年前就开始住在中国了。
Soccer has roots in Britain, which exported the game to its colonies some 150 years ago.
足球发源于英国，大约150年前，英国将足球出口到其殖民地。
They also extended the search to the next-door house where Garrido has been caretaker until its current occupant moved in three years ago.
他们将搜索范围扩大到隔壁的房子，据悉，现在的住户三年前搬进去之前，加里多曾是那里的看门人。
Glacier National Park now has only about 25 glaciers, compared with around 150 a century ago.
冰川国家公园目前只有大约25座冰川，而在一个世纪前约有150座。
Dr. Rowan, whose secretary resigned two weeks ago, has had to do all his own typing.
罗文博士的秘书两周前辞职了，他现在只能自己打字。
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