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.
一项旨在降低世界人口增长率的20年行动计划今天在开罗有望获得广泛认可。
A 20-year action plan for cutting the rate of world population growth is expected to win wide approval today in Cairo.
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.
在此期间，世界人口增长了每年1.8%。
During that period the world's population was growing by an average of 1.8% a year.
虽然看上去不像，世界人口增长确实在减慢。
Odd though it seems, however, the growth in the world’s population is actually slowing.
你知道世界人口增长有多快吗？
世界人口增长越来越快。
人均GDP假定世界人口增长到100亿，然后保持不变。
The per capita assumes that world population grows to about 10 billion and then stays flat.
世界人口增长如此之快，世界已经变得非常拥挤。
The world population is rising so quickly that the world has become too crowded.
但是在过来的三、四百年间，世界人口增长很快。
But during the last three or four hundred years it has grown very quickly.
这看上去似乎表示世界人口增长的速度丝毫没有减慢。
That makes the world's population look as if it is rising as fast as ever.
从1950年到20世纪结束，世界人口增长了超过一倍。
World population more than doubled from 1950 to the end of the 20th century.
在二十世纪中叶，全世界人口增长的速度远远地高于粮食产量的增长速度。
In the middle of the twentieth century, world population was expanding faster than food production.
这使得实际人均收入上升了近40%，而同期世界人口增长只有约1.6%。
This allowed real per capita incomes to rise by almost 40 percent even though world population grew by roughly 1.6 percent a year during the same period.
贡献被融合进一个题为‘世界人口增长对美国安全和海外利益的牵连’的报告中。
Their contributions were combined into one report entitled “Implications of Worldwide Population Growth on US Security and Overseas Interests.”
接下来20年世界人口增长的大部份都是在温室气体排放很少的国家里。
Most of the world's population growth in the next 20 years will occur in countries that make the smallest contribution to greenhouse gases.
这一推测是根据世界人口增长的预计而来，我们周围将有更多的人患上癌症。
Underlying all this is an expected expansion of the world's population, there will be more people around to get cancer.
但当工具的使用所产生的新动力被充分利用以后，世界人口增长率下降并且趋于稳定。
But when the new power from the use of tools has been exploited, the rate of world population growth fell and became almost stable.
讨论了在世界人口增长、粮食短缺的情况下，积极有效地开辟多种饲草资源的必要性；
Under the circumstances of the world population increase and the grain shortage, the necessity developing different forage resources was discussed.
随着亚洲和拉丁美洲的生育率下滑，在接下来的40年中，世界人口增长有一半将来自非洲。
With fertility rates crashing in Asia and Latin America, half of the increase in population over the next 40 years will be in Africa.
上世纪80年代后期是世界人口增长最快的时期，当时每年增加的人口数量超过了8800万。
During the period of fastest growth, in the late 1980s, the world's population was rising by over 88m a year.
从1985年起，世界人口增长率超过食品的增长率，可耕地面积和谷物生产率每年都在减少。
Since 1985, the growth rate of population of the world is over that of the food production. The cultivated land and the grain production rate are decreasing every year.
然而世界人口增长实际已经放缓，增长率在上世纪60年代处在峰值点，当时的年增长率将近2%。
Yet the growth in the world's population is actually slowing. The peak was in the late 1960s, when it was rising by almost 2% a year.
然而世界人口增长实际已经放缓，增长率在上世纪60年代处在峰值点，当时的年增长率将近2%。
Yet the growth in the world's population is actually slowing. The peak was in the late 1960s, when it was rising by almost 2% a year.
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