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1·It started when the cold war ended, leading to an unprecedented period of free trade.

它始于冷战结束之时，然后是一段前所未有的自由贸易时期。

2·We are entering an unprecedented period in human history which offers a unique possibility for a rapid evolution in consciousness.

我们正在步入人类历史上前所未有的、人类意识可以得到快速进化的可能性的一个时代。

3·From 80s up to now modern stylistics has been experiencing an unprecedented period of full bloom with various schools set up in the west.

80年代至今，西方文体流派纷纷建立，文体学进入了空前繁荣的时期。

4·Since 1980s, signal processing has entered into an unprecedented period of rapid development with the emergence of new theories and methods.

自上世纪八十年代以来，信号处理进入了前所未有的快速发展期，新兴的理论和方法不断涌现。

5·China's dairy industry is entering an unprecedented period of rapid development, dairy products quality and safety issues have become an increasing concern.

中国乳品行业正进入前所未有的高速发展期，乳制品的质量与安全问题日益受到人们的关注。

6·We are now at an unprecedented period in the field of neuroscience: We can watch the human brain in action as it sees, thinks, decides, reads, and remembers.

我们正处于神经科学领域空前未有的时代，我们可以观察大脑看东西、思考、做决定、阅读及记忆时的运作情形。

7·We're entering an unprecedented period of user interface innovation, as Web developers are finally able to build Web applications as rich as local PC-based applications.

我们正在进入一个前所未有的用户界面革新时代，Web开发人员最终能够构建出与本地PC应用程序同样丰富的Web应用程序。

8·Retail food prices are heading for their biggest annual increase in as much as 30 years, raising fears that the world faces an unprecedented period of food price inflation.

食品零售价格正朝30年来最大年度增幅逼近，这令市场担心，全球正面临一个前所未有的食品价格上涨时期。

9·Retail food prices are heading for their biggest annual increase in as much as 30 years， raising fears that the world faces an unprecedented period of food price inflation.

食品零售价格正朝30年来最大年度增幅逼近，这令市场担心，全球正面临一个前所未有的食品价格上涨时期。

10·Historians will look back and say this was no ordinary time but a defining moment: an unprecedented period of global change, and a time when one chapter ended and another began.

历史学家有一天将会在回望的时候说，这是一个不寻常的时代，一个前所未有的全球变化时期，既是一个时代的结束，也是另一个时期的开始。