Some countries are reported to be stockpiling enough anti-virals for 25% of the population, while others have little or no access to such medicines because of their high costs or shortage of stocks.
有些国家的药品库存只能给供给25%的人口。由于药价昂贵、库存短缺，其他国家只拥有很少的药品，或根本就没有。
Approximately half of the world's population relies upon biomass fuels - such as wood, dung and agricultural wastes - for everyday tasks such as cooking, drying crops and purifying water.
几乎半数的世界人口都依靠生物质燃料——木材，牛马粪便和农业废料等——来完成如煮饭，干燥农作物，净化水等日常生活活动。
But there are other factors involved, such as increases in the amount of water needed to grow the food for a growing population.
然而还涉及其他一些因素，例如，为日益扩大的人口生产粮食所需的水量增加。
Neither the charming old track nor the town itself, with a population of just under 40, 000, was built for such crowds.
这个居民人口在40,000之下的迷人的老赛道甚至这整个小镇，都没有规划到这么大群观众的到来。
There are many ideas for achieving this, such as reviving its housing industry by getting it to build properties suitable for an ageing population, and beefing up its health-care sector.
为了达到这一目标，出现了很多的想法，比如为年老的人建筑更舒适的住宅而复兴房地产业，扩充健康医疗部门不足。
Rather, the rural population contains a higher proportion of persons whose characteristics, such as poor health, place them at high risk for depression.
乡村高发病人群有其主要特点：诸如健康状差导致抑郁症的高发危险。
It has also vigorously improved its employment policies for such key sections of the population as college graduates, migrant workers from rural areas and low-income urban dwellers.
大力完善高校毕业生、农民工和城镇困难人员等重点人群就业促进政策。
Until such time as mankind has the sense to lower its population to the points where the planet can provide a comfortable support for all, people will have to accept more "unnatural food." (1991：74)
除非人类终于意识到要把人口减少到这样的程度：使地球能为所有人提供足够的饮食，否则人们将不得不接受更多的“人造食品”。
In the general population, hypertension is a major risk factor for serious conditions such as heart disease, stroke and kidney disease.
一般来讲，高血压会导致心脏病、中风及肾病。
The Earth Pulse map, for instance, has a menu on the side that allows users to display information based on metrics such as population, meat consumption and deforestation.
例如，EarthPulse的地图，在其侧面上有一个菜单，允许用户显示数据，如人口、肉类消费和森林破坏等信息。
Neither the charming old track nor the town itself, with a population of just under 40,000, was built for such crowds.
无论是这魅力四射的旧赛场，还是这座只有4万人的小镇本身，都容纳不了这种规模的人群。
Students will learn about environmental concerns such as global warming and population growth, as well as the methods for managing and protecting the environment.
同学们将会学习到例如全球变暖和人口增长等环境问题，以及面对这些问题的解决方案和保护政策。
That number is smaller than current figures for the effective population size (or number of breeding individuals) for endangered species such as chimpanzees (21, 000) and gorillas (25, 000).
当时的人数甚至不及现在濒临灭绝的黑猩猩（21000头）和大猩猩（25000头）的有效种群大小（即能生育的个体数量）。
If the need for such a special hospital exists, the number of beds required would depend on the condition of the population.
如果存在对这种特殊医院的需要，其所需的床位数目取决于人群的情况。
From a sociological perspective, variables of social class emerge from the mobile population groups, which have two parts for such a city, the leaving and left-behind population.
从社会学层面看，社会阶层出现的变量来自于群体的流动人口，对于这样一座城市来说有两个部分，出走的和留守的人口。
Murrey thinks there could be growing demand for such products because of Europe's aging population.
Murrey认为由于欧洲人口老化，对这样的产品的需求可能正在增长。
Allergic diseases such as asthma and hay fever are problematic for about 30 percent of the population in the developed world.
变应性疾病例如哮喘、花粉热在发达国家的发生率大约30%左右。
Such situation is caused, partly by frequent changes in the definition of urban population in population censuses and partly by changes in the criteria for the designation of cities and towns.
这种情况部分是因为人口普查城镇人口定义的变化，部分是由城镇设置标准的变动引起的。
But factors such as low population intensity and low land productivity restrict the efficient demand for road transport.
但样本县因人口密度过小、耕地生产率低下等因素限制了对公路运输的有效需求。
Conclusion: This study model may be useful for various population level of data and materials in small area, also for analysis of risk factor of other rare disease such as other tumor.
结论：集合数据分析模型可用于小地域的各种群体水平的数据分析，及其它肿瘤等少见病的危险因素研究。
The song and dance are suitable for a group of people to dance together, which goes well with the situation in China: the country has such a large population.
这首歌及其舞蹈适合一组人一起跳，很符合中国的情况：人口众多。
A lot of flowage is tied up for a long time, and a series of problems such as occupying terra population resource using appear.
这不仅使大量的生产流动资金被长期占用，还存在诸如占地、环境污染和资源浪费等一系列问题。
A recognition system based on self learning BP neural network for feature data of wheat population images, such as total green areas and leaves areas was designed in this paper.
以小麦群体绿色面积和绿色叶面积指标信息的获取为例，研究了基于图像信息构建自学习BP神经网络识别模型的技术。
In such proceedings, the Special Committee has always expressed concern for the interests of the population on the Islands.
在这样的进程下，特殊委员会一贯表现出了对岛屿人民的关注。
Finally, we analysed periphery resource of urban park, which offer basis for calamity relief such as population loosen and resource allocation etc when calamity occurs.
并对防灾公园周边资源进行分析，为灾害发生时的人口疏散、资源调配等救灾工作提供了依据。
The basic ecological data of the leopard, such as the distribution, population and it's dynamic, behavior, prey, is least known for lacking of a long-term study.
由于长期缺乏有效的科学调查，目前对其分布、种群及动态、行为、猎物现状等基础信息不清。
Such as the system is initialized with a population of random solutions and searches for optima by updating generations and the mechanism of iteration.
例如这个系统也是最初被初始化成为随机解的集合，然后通过更新后代并用迭代的方式来实现搜索最优解。
Such as the system is initialized with a population of random solutions and searches for optima by updating generations and the mechanism of iteration.
例如这个系统也是最初被初始化成为随机解的集合，然后通过更新后代并用迭代的方式来实现搜索最优解。
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