In five different years, villages overwhelmingly reported significant population declines.

在不同的五年里，绝大多数村庄报告了人口的显著下降。

Natural gas and coal—also fossil fuels—have similarly seen price declines that look to be long-lived.

天然气和煤炭，还有化石燃料，也出现了类似的价格下跌，而且看起来会持续很长时间。

One reason performance declines on sultry, humid days is that working muscles have to compete with the skin for blood.

在闷热潮湿的天气里运动能力下降的一个原因是，运动中的肌肉必须与皮肤争夺血液。

TV might make you less happy, but this is not what seems to be driving the recent declines in young people's average happiness.

电视可能会让你不那么快乐，但这似乎并不是导致最近年轻人平均幸福感下降的原因。

With new technological advances and mass production, projected cost declines should make wind power one of the world's cheapest ways to produce electricity.

随着新的技术进步和大规模生产，预计成本的下降将使风力发电成为世界上最便宜的发电方式之一。

Hearing normally declines as people age.

听力通常随着年龄的增长而减弱。

When grandmama urges her, she always declines politely.

奶奶催她时，她总是婉言谢绝。

As fall approaches in the northern hemisphere, the amount of solar energy available declines considerably.

随着北半球秋季的临近，太阳能的可用量大幅下降。

France is facing potentially more than one billion dollars in lost revenue this year, due to huge declines in tourism.

由于旅游业收入的大幅下滑，法国今年可能面临超过10亿美元的收入损失。

France is facing potentially more than one billion dollars and lost revenue this year, due to huge declines in tourism.

由于旅游业的大幅下滑，法国今年可能面临超过10亿美元的收入损失。

Their big feet might be hurting the largest member of the weasel family as snowpack declines across much of North America.

当北美许多地区积雪消融的时候，它们的大脚掌也许会伤害到那些黄鼠狼家族中最大的成员。

TV might make you less happy , but this is not what seems to be driving the recent declines in young people's average happiness.

看电视可能会让你变得不那么开心，但这似乎不是近期导致年轻人平均幸福感下降的原因。

These lights, known as adaptive signals, have led to significant declines in both the trouble and cost of travels between work and home.

这些被称为自适应信号的灯，已经显著降低了往返于工作和家庭之间的麻烦和成本。

While the rate of growth in the use of energy declines as an economy matures, no country has yet reduced energy use while raising gross domestic product.

虽然能源消耗的低增长是经济体系成熟的表现，还没有国家能做到在提高国内生产总值的同时减少能源的使用。

A new data shows that the global AIDS pandemic will cause a sharp drop in life expectancy in dozens of countries, in some cases declines of almost three decades.

一项新的数据显示，全球艾滋病疫情将导致数十个国家的预期寿命大幅下降，在有些国家寿命减幅近30年。

Our continuing failure to deal with the environmental declines that are undermining the world food economy forces me to conclude that such a collapse is possible.

在应对破坏世界粮食经济的环境恶化的过程中，我们的连续失败迫使我得出这样一个结论：这种崩溃是有可能发生的。

Their approach is flexible enough that in principle other important quality-of-life changes could be incorporated—for example, decreases in total emissions of pollutants and declines in crime rates.

他们的方法足够灵活，原则上可以纳入其他重要的生活质量变化，如减少污染物排放总量、降低犯罪率。

But he declines to elaborate.

但他拒绝阐述细节。

These declines are unprecedented.

衰退是前所未有的。

His net worth declines.

他的净值下降。

Brain's "Sketch Pad" Declines With age.

大脑的“速写本”会随着年龄衰退。

He politely declines.

他都礼貌地回绝了。

These figures may understate actual price declines.

这些数字可能低估实际价格的下跌。

The Gulf Stream current declines significantly.

墨西哥湾流明显减弱。

There has been tremendous declines in fertility.

生育率在大幅下降。

In fact, the activity in their insula actually declines.

事实上，男孩头脑中这些区域的活动呈下降趋势。

But that is small consolation if global spending declines.

但是如果全球经济消费衰退的话，这只是个小小的慰藉。

As people age, their ability to build muscle mass declines.

当让人们老去，塑造肌肉的能力就会下降。