Such a policy distorts the age structure: the proportion of population in the younger age groups goes down and proportion of the elderly increases.
这样一项政策改变了年龄结构：年轻人的人口比例下降，而老年人的比例增长。
Under simple random sampling scheme without replacement and unknown proportion of population possessing neutral attribute, the optimal allocation of sizes of two sub-samples is given.
对简单随机不放回抽样，在总体非敏感属性个体比例未知的情况下，给出了两个子样本容量的最优配置。
A substantial proportion of the population speak a French-based patois.
此人群中很多人说一种以法语为基础的混合语。
In America, a one-percentage point increase in the proportion of immigrants in the population made the native-born 0.05% better off.
在美国，移民在人口中所占比例每增加一个百分点，本土出生的人口生活水平就会提高0.05%。
The proportion of the population who are over retirement age has grown tremendously in the past few years.
超过退休年龄的人口的比例在过去几年中已急剧增长。
Although a small proportion of the total population, this perhaps had a massive local impact when a large proportion of the young men were removed from an area.
虽然在总人口中所占比例很小，但当很大比例的青年男子被迫迁出某一地区时，可能对当地产生巨大的影响。
As mass production techniques were refined in the 19th century, the price of pianos dropped to the point that a larger proportion of the population could afford to own them.
随着19世纪大规模生产技术的改进，钢琴的价格下降到更多人都买得起的程度。
WHO reports annually on the proportion of the population using solid fuels for cooking as a key indicator for assessing progress in health and development.
世界卫生组织每年针对使用固体燃料进行烹饪的人口比例作出报告，以此作为评估卫生与发展方面取得进展的一项主要指标。
Yet many other factors influence murder rates—unemployment, the probability of getting caught, the availability of guns, the proportion of young men in the population and so on.
但很多其他因素影响着谋杀案发案率——失业率，被抓住的可能性，能否搞到枪支，人口中的青年人比例以及其他因素。
For example, economists can plot a relationship between the proportion of the population aged between 35 and 59 (when people save most) and the level of real interest rates.
比方说，经济学家可以画出35岁至59岁人群(存最多钱的一部分人)的比例与实际利率水平的关系曲线。
More than half of the world's population lives in cities, with the urban poor constituting a growing proportion of urban dwellers.
超过一半的世界人口生活在城市，城市贫困人口在城市居民中的比重不断扩大。
The proportion of the user population is similar in both approaches — only the amount and the weight of the segments are different.
在这两种方法中，用户数量的比例是相似的——只是组的数量和权重有所不同。
Most people were then required to buy their own health insurance, drastically reducing the proportion of the population with guaranteed health care.
当时绝大部分人需要购买他们自己的健康保险，从而大大地降低了享受卫生保健人数的比例。
Figures from the Office for National Statistics published last year showed the proportion of the population getting married had dropped to its lowest level since records began, in 1862.
去年国家统计办公室公布的数据显示，人口结婚比例降到自1862有记录以来最低水平。
Even in countries where the epidemic has a very high impact, such as Swaziland and South Africa, a large proportion of the population do not believe they are at risk.
即使在艾滋病流行具有很大影响的国家，例如斯威士兰和南非，很大部分的人不认为他们有危险。
In 1970 Japan's urbanisation ratio (the proportion of urban population to total population) was still just 53 per cent.
1970年，日本的城市化率(城市人口占总人口的比率)仅为53%。
The same proportion of the US population now would be six million deaths.
同样的死亡比例在现在的美国人口中则达到6百万。
In 2007, he reckons, Egypt's civil service was about 7m strong, and as a proportion of their population the Gulf oil producers' public-sector payroll is higher still.
2007年，根据这个海湾石油生产国人口的比例，他预计埃及的行政部门约有7m强，依然是公共部门的工资相对更高。
The proportion of disabled people is rising and now represents 1 billion people - 15% of the global population - according to the first official global report on disability.
根据第一份官方的全球残疾人报告，残疾人团体的比例有所上升，目前有10亿人，占全球人口的15%。
Demand for elderly care has increased by 9% over the past four years, and it is set to rise further as life expectancy climbs (while the proportion of the population of working age shrinks).
在过去的4年中，老年人护理的需求增长了9%。随着对生命期望的攀升，需求还将增长更多(而工作的人口比例在缩水)。
In the past century, the proportion of urban population worldwide rose from 13% in 1900, to 29.1% in 1950, to 48.6% in 2005; it is expected to rise to 60% (4.9 billion) by 2030.
在过去的一个世纪，全世界城市人口的比例从1900年的13%上升到了1950年的29.1%，再到了2005年的48.6%。预计到2030年，这一数字将达到60%(49亿)。
The proportion of the world's population with access to electricity will rise over the next 20 years but 1.3b will still be without power in 2030, the International Energy Agency said.
国际能源署表示，虽然未来20年中全球能用上电的人口比例将上升，但到2030年，仍将有13亿人用不上电。
The UK's database includes the profiles of 7.5 per cent of its population, the highest proportion in the world.
英国收集了占人口比例的7.5%的DNA数据库，是世界上人口比例最高的数据库。
The map below shows the distribution of the Earth's population, with the size of each territory showing the relative proportion of people living there.
下面这张地图显示了地球的人口分布状况，也显示了当地居住人口相对比例的各国版图面积。
Advances in medicine and science continue to race ahead, yet an ever greater proportion of the world's population is left behind for a host of reasons, including those with economic and social causes.
医学和科学方面的进展继续迅速推进，但出于众多原因，包括经济和社会因素造成的原因，越来越大比例的世界人口被抛在后面。
The result is that Brazil spends as high a proportion of its GDP on pensions (12%) as Britain does, even though the population is much younger.
结果导致巴西不得不把GDP的12%用于支付养老金，英国也有类似的情况，尽管巴西人口更年轻化。
The result is that Brazil spends as high a proportion of its GDP on pensions (12%) as Britain does, even though the population is much younger.
结果导致巴西不得不把GDP的12%用于支付养老金，英国也有类似的情况，尽管巴西人口更年轻化。
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