据估计，地球表面另外四分之一的土地正面临沙漠化威胁。
It has been estimated that an additional one-fourth of the Earth's land surface is threatened by this process.
第三种观点是资源的贱价时代已经结束了。我们耗尽了石油，耗尽了产出食物的土地，我们大体上已经走到了掠夺地球资源的穷途末路。
The third view is that the era of cheap resources is over for good - that we're running out of oil, running out of land to expand food production and generally running out of planet to exploit.
只有两类——人科和象科——会引起注意。而在他们之间，象与人早已开拓了地球上的宜居土地。
Only two are of any note —the families Hominidae and Elephantidae—yet between them elephants and humans have colonized the habitable surface of the earth.
不利用房顶的光伏收集装置和聚光太阳能发电站将占用地球0.33%的土地。
The nonrooftop photovoltaics and concentrated solar plants would occupy about 0.33 percent of the planet’s land.
这片雨林普通贫瘠的土地-地球上这样最大的土地-使得持续的耕种非常困难。
The generally infertile soils of this rainforest—the largest such forest on Earth—make sustainable farming difficult.
地球公正，一个非盈利的环保律师事务所，正在请求阻止租赁蒙大拿奥特·克里克的国有土地和劝阻阿奇煤炭公司开采煤矿用于满足亚洲和其它地区的需求。
Earthjustice, a nonprofit environmental law firm, is suing to block the lease of state-owned land in Otter Creek, Mont., to Arch Coal for mining to serve demand in Asia and elsewhere.
“能够出产食物的土地的增多，使得地球能够承载更多的人”。
“The Earth will be able to support enormously more people because far greater land area will be available to produce food, ” he said.
不幸的是，在我们的地球上，高尚的野蛮人和未被破坏的自然景色已越来越少；除了两极地区以外已经没有未开发的土地了。
Our planet, unfortunately, is running out of noble savages and unsullied landscaped; except for the polar regions, the frontiers are gone.
作为南极洲少数的没有冰覆盖的地区之一，麦克·默多干谷(McMurdo Dry Valleys)存在着地球上最寒冷和最干燥的土地。
One of the few perpetually ice-free regions in Antarctica, the McMurdo Dry Valleys are home to some of the coldest and driest exposed land on Earth.
它只意味着人，或者更准确地说是地球生物，因为它来自单词adamah，意为土地或地面。
It simply means human or more precisely earthling because it comes from the word adamah, which means ground or earth.
当然地球无法支持100亿个过狩猎采集生活的人，因为他们人均需要的土地比现代依靠农业养活的人要多得多。
The earth could certainly not support 10 billion hunter-gatherers, who used much more land per head than modern farm-fed people do.
多年以来，那么多研究人员在这座山上花费了那么多时间，他们甚至称它为地球上被研究最深的一块土地。
Over the years, so many researchers have spent so much time on the mountain that some call it the most-studied landscape on earth.
与此同时，某些环保人士要求的那种焦土地球的生活方式转变是我们大多数人所不愿意接受的。
At the same time the kind of scorched-earth lifestyle transformation some environmentalists demand is more than most of us are willing to embrace.
他使得地球比以前变得更“圆”。以两极为标准的话，地球中部是稍稍膨胀的，历经灾难的土地代替原有的部分，让地球变得更圆。
Earth's midsection bulges in relation to the measurement from pole-to-pole, and the catastrophic land displacement caused a small reduction in the bulge, making the planet more round.
我们也改善土地，但只限于那些我们由地球引导来改善的土地。
We too improve the land, but only where we are guided by earth to do so.
那些高站点海岸给那些理解形成的这重要过程买得起杰出机会使冰冻和土地举起地区的那些表面地球的。
The High Coast site affords outstanding opportunities for the understanding of the important processes that formed the glaciated and land uplift areas of the Earth 's surface.
如果这些需求不检查控制在某种方式上，人类最后将会开发完地球上所有可用的土地。
If the demand is not checked controlled in some way, humans will eventually develop all of the earth's available land.
在这个节目中我们将展示，这块承载着古老文化的厚重土地，对我们的地球来说是多么的重要。
In this programme we will discover why this harsh land with its ancient culture is vitally important for much of our planet.
在地球的另一面，你还记不记得，这片红棕色土地上空金色的星星？
On the other side of earth, do you still remember, the golden stars hanging above this scarlet land?
地球正在选择来产生她自身对土地中塑料或者海洋中塑料的免疫反应。
Earth is choosing to create her own immune response to the plastic upon the land or in the sea.
更何况，我们对土地不同的使用方式意味着地球是一个不同生态系统的镶嵌画，而不是一个更大的彼此相接的栖息地。
And it doesn't help that all of the different ways we use land means that the Earth is pretty much a Mosaic of different ecosystems rather than larger, contiguous habitats.
更何况，我们对土地不同的使用方式意味着地球是一个不同生态系统的镶嵌画，而不是一个更大的彼此相接的栖息地。
And it doesn't help that all of the different ways we use land means that the Earth is pretty much a Mosaic of different ecosystems rather than larger, contiguous habitats.
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