Half a century later GM is a typical example of poor management.

半个世纪后，通用汽车成为管理不善的典型例子。

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。

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。

Although half a century has passed, Shao Guohua never forgot the film ticket his teacher gave him that warmed his heart when he was a boy.

半个世纪过去了，邵国华从未忘记儿时老师给他的那张温暖他心灵的电影票。