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。

youdao

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。

youdao

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。

youdao

A half-century ago,for example, producing genetic copies of animals was only a dream of scientists.

VOA: special.2010.03.23

The role of Paris in French life is unique and that has been accentuated over the centuries, particularly the last century and a half, by some of the things that I want to talk about.

巴黎在法国人的生活中的地位是独特的,过去几百年中,这种状况引人瞩目,尤其在近一百五十年里,我想讲的正是关于这方面的内容

耶鲁公开课 - 1871年后的法国课程节选

This refers--this actually goes back to B.F. Skinner, a psychologist who flourished in the first half of this century.

这要追溯到B.F.斯金纳,一位活跃在上世纪前期的心理学家

耶鲁公开课 - 金融市场课程节选

Burma installed a nominally civilian government in March 2011, ending almost half a century of military rule.

BBC: Australia boosts Burma aid and defence co-operation

The adoration was put to the test in 1974 when Portugal emerged from half a century of dictatorship.

ECONOMIST: Amalia Rodrigues

And is trade not free enough already after half a century of liberalisation?

ECONOMIST: A survey of world trade