人口增长每年下降1.4%。
地球上的生命将无法延续，除非人口增长得到控制。
Life on Earth will become unsustainable unless population growth is held in check.
人口增长被认为是一个特别有影响力的推动力。
Population growth is considered a particularly influential push.
但我们不禁想问——是什么导致了人口增长这么突然？
But we were left wondering—what cause the population to increase so suddenly?
北欧渐进的农业革命源于人口增长时期对粮食供应的担忧。
A gradual agricultural revolution in northern Europe stemmed from concerns over food supplies at a time of rising populations.
人口增长、营养标准提高和饮食偏好转变将对全球粮食供应施加压力。
Rising population combined with improved nutrition standards and shifting dietary preferences will exert pressure for increases in global food supply.
由于人口增长放缓，目前用于种植作物的耕地可能会恢复成森林或荒野。
Thanks to slowing population growth, land currently ploughed up for crops might be able to revert to forest or wilderness.
美国作家托马斯的一本书中描述了能源消耗过度、气候变化和人口增长的问题。
The problems of excessive energy consumption, climate change and population growth have been described in a book by the American writer Thomas.
在其至少十年来平均每年的人口增长超60万的加州，人们正在建设更多的住宅。
In California, where population growth has averaged more than 600,000 a year for at least a decade, more residential housing is being built.
来自强迫式劳动的威胁日益严重，阻碍了人们的进一步定居，从而限制了特奥蒂瓦坎的人口增长。
The increasing threat of coerced labor discouraged further settlement and limited Teotihuacán's population growth.
展现的特奥蒂瓦坎图景是黑曜石的开采和加工、贸易、人口增长、灌溉和宗教旅游之间良性反馈的经典画面。
The picture of Teotihuacán that emerges is a classic picture of positive feedback among obsidian mining and working, trade, population growth, irrigation, and religious tourism.
我是说，随着人口增长，路上车辆更多了，机械也更多了，他们肯定不能只依赖于甘蔗（作为生物燃料）吧？
I mean, as the population grows and there are more vehicles on the roads and there's more machinery, surely they can't depend so much on sugar cane?
经过几代人的人口增长，人们以如此高的密度挤满了这个地区，以至于公共聚居地的出现可能是一个必要的结果。
After several generations of population growth, people packed the landscape in densities so high that communal pueblos may have been a necessary outcome.
专家表示，随着气候变化和人口增长对世界上许多地区的水资源供应造成压力，滴灌这种创新做法显得越来越重要。
Experts say drip irrigation is an innovation whose importance is growing, as climate change and rising population strain water supplies in many parts of the world.
同一时期，Jurania的人口增长了6%，部分原因是来自该地区其他国家的人们移民到 Jurania。
During the same period, the population of Jurania increased by 6 percent, in part due to immigration to Jurania from other countries in the region.
然而，随着世界人口增长，竞争也愈加激烈。
However, as the population of the world is getting larger, competition is getting fiercer.
随着人口增长和工业发展，垃圾到处都是。
With the increase in population and the development of industry, litter is everywhere.
他关于人口增长放缓、移动电话和身高增加的预测都很接近事实。
His predictions about slowing population growth, mobile phones and increasing height were close to the mark.
在20世纪90年代早期，我们从未想到人口增长会因为艾滋病死亡率而变为负增长。
Back in the early 1990s, we never would have suspected that population growth would have turned negative because of AIDS mortality.
本世纪世界人口增长了两倍多，世界产出也大幅增长，所以你会认为地球本身也受到了影响。
The world's population has more than tripled during this century, and world output has risen hugely, so you would expect the earth itself to have been affected.
这些探险很可能是受当地人口增长和政治局势的影响的，以及探索未知水域的带来挑战和刺激感。
These expeditions were likely driven by population growth and political dynamics on the home islands, as well as the challenge and excitement of exploring unknown waters.
在人口仍然年轻化的美国，它目前占总人口增长的40%，而在快速老龄化的西欧，这一比例约为90%。
In still-fertile America it currently accounts for about 40% of total population growth, and in fast-ageing western Europe for about 90%.
这个世界的幸运儿所进行的过度消费成了一个环境问题，其严重程度也许只有人口增长问题能与之相提并论。
Overconsumption by the world's fortunate is an environmental problem unmatched in severity by anything but perhaps population growth.
从1980年的人口普查中可以看出，随着美国东北部和中西部的人口增长接近停滞，地区间的竞争越来越激烈。
Emerging from the 1980 census is the picture of a nation developing more and more regional competition, as population growth in the Northeast and Midwest reaches a near standstill.
他们认为岛上的人口增长迅速，然后保持或多或少的稳定速度来增长，直到欧洲人的到来引进了岛上居民对其没有免疫力的致命疾病。
They think its population grew rapidly and then remained more or less stable until the arrival of the Europeans, who introduced deadly diseases to which islanders had no immunity.
郊区的人口增长已经开始变缓。
但是，人口增长使需求增加。
人口增长，无论怎样，甚至会更加危险。
过去20年，奥斯汀的人口增长了一倍。
过去20年，奥斯汀的人口增长了一倍。
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