The number of juveniles in the general population has fallen by a fifth in the past 10 years.
在过去的10年中，青少年在总人口中所占的比重下降了1/5。
Slabs of rock had slipped sideways in the remote past and formed this hole.
在遥远的过去，大块的岩石向旁边滑落，形成了这个洞。
The immediate threat of the past has disappeared and the security situation in Europe has significantly improved.
过去的直接威胁不复存在了，欧洲的安全状况有重大改善。
In some sports you're past it by the age of 25.
在某些运动中，人过25岁就难有作为了。
We've made progress in righting the wrongs of the past.
我们已经在改正过去的错误方面取得了进展。
I've had my fair share of success in the past.
过去我已经取得了应有的成功。
It was as though Corinne was already dead: they were speaking of her in the past tense.
就好像科琳已经死了似的：他们当时在用过去时态谈起她。
He hopes to improve on his tally of three goals in the past nine games.
他希望提高在过去九场比赛中打进三球的纪录。
One very old method used in the investigation of past climatic conditions involves the measurement of water levels in ancient lakes.
在调查过去的气候条件时使用的一种非常古老的方法是测量古代湖泊的水位。
In each of the past five years, Barraland's prison population has increased.
在过去的五年里，Barraland的监狱的囚犯人数每年都在增加。
I guess all those hours of practice in the past month are finally paying off.
我想，过去一个月练习的所有时间终于得到了回报。
It can be found in cultural products of the past in fairy tales, in fiction, in architecture, in music, in the movie in products of the human mind that contain "the outlines of a better world".
在过去的文化产物中，如童话、小说、建筑、音乐、电影、人类思想产品里都可以找到“更美好世界的轮廓”。
The past participle of regular verbs ends in '-ed'.
规则动词的过去分词以-ed结尾。
Many of the aid projects in the developing world have been misdirected in the past.
过去，许多对发展中国家的援助计划被误用了。
Two thirds of the region has been deforested in the past decade.
在过去十年里这个地区的森林有三分之二被毁掉。
The government has in the past given qualified support to the idea of tightening the legislation.
政府过去对加强立法的观点给予了有保留的支持。
Modern woman has been freed from many of the duties that befell her sisters in times past.
现代女性已从旧时代姐妹们肩负的许多责任中解放出来了。
He received the award in recognition of his success over the past year.
他受到了奖励，这是对他过去一年的成绩的肯定。
In the past, the region had been protected by its forbidding geography and the extremities of its climate.
过去，这个地区受到令人生畏的地理条件和极端的天气状况的保护。
In past presidential elections, Missouri has been a barometer of the rest of the country.
在过去的总统大选中，密苏里州一直是该国其余各州的晴雨表。
In the past this process of transition has often proven difficult.
在过去，这种转变过程常证明是艰难的。
In the past they have been the target of racist abuse.
过去他们一直是种族虐待的对象。
The proportion of the population who are over retirement age has grown tremendously in the past few years.
超过退休年龄的人口的比例在过去几年中已急剧增长。
In the past, the UN has stayed out of the internal affairs of countries unless invited in.
在过去，除非受邀请介入，否则联合国不参与各国的内部事务。
In the past, about a third of the babies born to women with diabetes died.
在过去，患有糖尿病的妇女生的婴儿中大约有三分之一都死了。
I was treated to a verbatim report of every conversation she's taken part in over the past week.
有人给了我一份报告，上面一字不差地记录了她在过去的一周中参与的每一次谈话。
I haven't seen much of her in the past few weeks.
近几周来我很少见到她。
The sense of let-down today is all the greater because in the past doctors have been over-confident about these treatments.
今天的幻灭感尤其强烈，原因是过去医生们对这些治疗过度自信。
I've had my share of luck in the past.
以前，命运也不算亏待我。
To begin with, they will have to find out whether life has ever existed on the planet of Mars in the past.
首先，他们必须搞清楚火星上是否曾经存在过生命。
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