They have looked at half a century of data from fisheries around the world.
他们研究了半个世纪以来世界各地渔业的数据。
Such a change cannot be achieved overnight, all the less so after over half a century of constant deterioration in favour of road.
这种运输模式的改变不可能一蹴而就，尤其是近半个世纪以来，铁路等运输模式不断萎缩，让位于公路，能实现的改变就更少了。
Half a century of town and country planning has enabled it to retain an enviable rural coherence, while still permitting low-density urban living.
半世纪以来，合理的城乡规划使英国得以保留令其他国家羡慕的乡村协调性，同时还允许低密度的城镇人口。
As a way of marketing with media, product placement has been more than half a century of history.
作为一种寄生于媒体的营销方式，植入式广告事实上已经有超过半个世纪的历史。
After nearly half a century of peace, most Monpas seem relaxed about living in the dragon's shadow.
在接近半个世纪的和平后，大部分门巴人看起来已经在龙的阴影下生活的很惬意了。
The National Center for Atmospheric Research in Boulder, Colo., has tracked half a century of declining rainfall on the continent.
科罗拉多博尔德美国大气研究中心(TheNational CenterforAtmospheric Research)的跟踪数据显示，半个世纪以来非洲大陆的降雨日趋减少。
The National Center for Atmospheric Research in Boulder, Colo. , has tracked half a century of declining rainfall on the continent.
科罗拉多博尔德美国大气研究中心（TheNational CenterforAtmospheric Research）的跟踪数据显示，半个世纪以来非洲大陆的降雨日趋减少。
Nearly half a century of lung cancer incidence and mortality rates has clear ascendant trend in developed countries, and the city is more obvious than in rural areas.
近半个世纪以来肺癌发病率和死亡率一直呈明显上升趋势，在工业发达的国家更为明显，且城市高于农村。
While fusion has moved some way beyond the purely hypothetical after more than half a century of painstaking research, it still remains some distance away from being feasible.
经过半个多世纪的艰苦研究，聚变已经不再是单纯的猜想。然而，它离付诸实践还有很长的距离。
The state of Liberia was formed a century and a half ago by freed slaves from the United States.
利比里亚国家是一个半世纪前由来自美国的获得自由的奴隶建立的。
In 1971 she was saved for the nation as a unique and historic reminder of Britain's naval heritage in the first half of the 20th century.
1971年，这艘船被保存下来，作为20世纪上半叶英国海军历史遗产的独一无二的历史纪念物。
Half a century later GM is a typical example of poor management.
半个世纪后，通用汽车公司成为经营不善的典型例子。
Half a century later, GM is a typical example of poor management.
半个世纪后，通用汽车公司成为了一个管理不善的典例。
More than half a century ago, the Massachusetts Institute of Technology (MIT) opened its Center for Advanced Visual Studies (CAVS) to explore the role of technology in culture.
半个多世纪前，麻省理工学院（MIT）开设了高级视觉研究中心（CAVS），探索科技在文化中扮演的角色。
For that, a half century of willful forgetting about painful memories like the German Titanic was perhaps a reasonable price to pay.
为此，对像德国泰坦尼克号这样的痛苦回忆半个世纪的有意遗忘，也许是一个合理的代价。
Developed a half-century ago, GNP helped establish a common way among countries of measuring the change in economic output.
国民生产总值是半个世纪前制定的，帮助各国建立了衡量经济产出变化的统一方式。
Over the past century and a half, however, studies in the history of human development have shown that the formation of culture is part of the biological adaptation.
然而，在过去的一个半世纪里，对人类发展史的研究表明，文化的形成是生物适应的一部分。
But even with more than a century and a half of observations, many unresolved questions remain about the farthest planet from the sun.
不过，即使经过了一个半世纪的观测，这个距离太阳最远的行星，仍有许多尚未解决的问题。
A century and a half ago, Charles Dickens walked the streets of young America and fumed to see his novels in cheap pirate versions.
一个半世纪以前，狄更斯在年青的美国大街上走，看到他的小说被盗版贱卖，也相当气愤。
A rat and a rabbit, emerging from a century and a half of peaceful seclusion, have found themselves in the eye of an international storm about their future, and the proper fate of looted artworks.
经过一个半世纪的离群索居之后，一只老鼠和一只兔子发现自己正身处一场涉及它们的未来的国际风暴之中，这是被掠夺艺术品的特有命运。
This nature reserve exists about a half of a century, but only water supply was built and nothing else. While aurochs need some water to stand such hot weather.
这个自然保护区存在了接近一个半世纪，但仅仅只提供了充足的用水，用来满足野牛们应对炎热天气的需求。
We must be more willing, not only to accept the prospect of limited war but, as Kissinger does in his book of a half century ago, to accept the prospect of a limited nuclear war between states.
我们不仅要接受有限战争的前景，而且更要有意愿接受基辛格半世纪前在书中提到的国与国之间有限核战争的前景。
They did find some major holes in the hull, but it's not clear if they're what sank the Hunley, or if they're the product of a century and a half of degradation at the bottom of the sea.
他们的确在船壳上发现了大洞。但不清楚这是否就是导致亨利号沉没的原因，或者这也可能是在海底长达一个半世纪的腐蚀所导致的。
California is now in the middle of the worst outbreak of pertussis in half a century.
加州目前正处于半个世纪以来最严重的百日咳爆发中。
The first half of the 20th century saw a mass migration of African Americans from the rural South to Northern cities, and as they moved, they took their recipes with them.
20世纪上半叶，非裔美国人大批的从南方农村迁移到北方城市，随着他们的迁移，他们带走了自己的食谱。
It took over half a century for the total of successful defectors to the South to reach 10,000.
在半个世纪的时间里，总共已有一万人成功逃到韩国。
It took over half a century for the total of successful defectors to the South to reach 10, 000.
在半个世纪的时间里，总共已有一万人成功逃到韩国。
It took over half a century for the total of successful defectors to the South to reach 10, 000.
在半个世纪的时间里，总共已有一万人成功逃到韩国。
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