half a century ago 半个世纪前
Also A Century Ago 一个世纪前
Roughly A Century Ago 大致一个世纪前
A Half Century Ago 半个世纪以前
The first German village in southwestern Siberia was founded a century ago by settlers from the Volga region.
西伯利亚西南部的第一个日尔曼村庄是一个世纪前由来自伏尔加地区的移民们建立的。
A century ago, the resource in question was oil.
一个世纪以前,石油资源是一大问题。
A century ago, few people regularly brushed their teeth multiple times a day.
一个世纪以前,很少有人一天刷几次牙。
President Obama notes that it was Theodore Roosevelt who first called for health care reform nearly a century ago.
VOA: special.2009.09.12
That might not have been true a half century ago.
这在半个世纪前本无法实现。
It shows how Chinese communities developed all over the American West more than a century ago.
VOA: special.2010.07.23
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