We are reproducing ourselves at such a rate that our numbers threaten the ecology of the planet.

我们的繁衍速度太快，以至于人口数量对地球的生态系统造成了威胁。

柯林斯例句

There were two distinguished refugee damps at that time.

成份构成复杂、人口数量庞大,在日军的进攻下,形成了两次举世无双的难民潮.

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As the mean time, the great population needs tremendous food.

同时巨大的人口数量也对食物有很大的需求.

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There were many ups and downs in the earth's numbers.

世界人口数量变化起伏不定.

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Population supported by China during the past 20 years.

中国在过去20年之内养活的人口数量.

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Population density ( people per unit area ) is an example.

比如人口密度就是指 单位面积 的人口数量.

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So, can set neatly according to domestic population amount buy an amount.

所以, 可以按照家庭人口数量来灵活规定购买数量.

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That , Dr Thomas suggests, corresponds with a period when human numbers shrank.

托马斯博士对此解释说, 这是由于历史上某段时期人口数量减少造成的.

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Get a list of countries in decreasing order of their populations.

获取各国的列表,以人口数量递减排序.

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This would mean losing track of the population.

这将意味着失去对人口数量的控制.

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Colleges are also facing changes in the population.

大学还要面对人口数量的变化.

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Thereinto, the research on spatial difference respectively analyzes the quantity of population and population quality.

其中, 从人口数量和素质两方面分析人口空间动态特征的差异性.

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Evidently sustainable development needs a population with a reasonable exploitation of natural resources.

显而易见,提倡可持续发展意味着合理的人口数量和对自然资源的合理开发.

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We persisted in controlling the size of the population and raising its quality.

坚持控制人口数量,提高人口素质.

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Obviously, some of the differences between countries are caused by differences in their areas and populations.

显然, 地理位置和人口数量不同也是造成各国统计结果不同的原因.

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