近几十年来，制造业遭受了重大打击。

Manufacturing has taken a significant hit during recent decades.

近几十年来，由于干旱，它们的栖息地不断缩小。

Their habitats have been shrinking in recent decades because of the droughts.

最后一个潜在的原因是近几十年来吃零食和外出就餐的增加。

The final potential cause is an increase in snacking and eating out over recent decades.

近几十年来,知识的传播速度大大加快.

This diffusion of knowledge accelerated dramatically in recent decades.

近几十年借贷业的高速发展还有一些其它的因素。

A few other factors have contributed to the borrowing boom in recent decades.

但近几十年来，联邦政府逐渐拒绝做出艰难抉择。

Yet for decades, Washington has refused to make the tough choices.

介绍了近几十年来离子液体的发展历程及其特点。

The development and characteristics of ionic liquids in recent decades are reviewed.

近几十年来，中美两国关系从未像现在这样不稳定。

The relationship hasn't looked so rocky in decades.

在中国考古学史上，大量汉墓的发掘是近几十年来的事。

In recent years a large number of tombs of the Han Dynasty were unearthed in China.

详细介绍了近几十年来国内外关于蓝湿革的酶软化研究.

The enzymatic bating systems of wet blue over the past decades are reviewed and summarize.