Additional social stresses may also occur because of the population explosion or problems arising from mass migration movements—themselves made relatively easy nowadays by modern means of transport.
由于人口的猛增或大量人口流动（现代交通工具使这种流动相对容易）造成的种种问题也会对社会造成新的压力。
The 1939-45 world war involved the mass of the population.
1939至1945年间的世界大战卷入了多数民众。
Astronomers have long speculated that the missing baryonic mass might eventually be discovered in intergalactic space or as some large population of galaxies that are difficult to detect.
天文学家长期以来都在推测，最终可能会在星际空间或者是在难以探测的大量星系中发现丢失的重子质量。
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。
But this is how the countries of the world look if maps are based on population size rather than land mass.
然而，如果地图是根据人口规模，而不是以领土面积绘制而成的，世界各国看起来就是这副模样。
The most recent yellow fever mass vaccination campaign in this area was conducted in 1987 and as a result the population is highly susceptible to the disease.
该地区最近一次黄热病大规模预防接种运动是在1987年进行的。因此，这里的人口极易受该病的影响。
Many countries use ivermectin in a strategy called mass drug administration (MDA), which means that the entire population in an affected area is given the drug once or twice a year.
许多国家在一项叫做“大规模药物配给（MDA）”的战略中运用伊维菌素，该战略意味着在感染疾病的地区针对全部人口每年给药一两次。
Being divorced at, say, age 33 in 1962 meant becoming a singleton amid a mass of married people, as the overwhelming majority of the population married by age 30.
1962年33岁的人离婚意味着在已婚人群中成为单身，那时绝大多数人30岁前结婚。
Cameroon conducted a yellow fever mass vaccination campaign in 62 at-risk-districts covering a population of 7.4 million in May 2009.
喀麦隆曾于2009年5月在62个高危地区开展了大规模的黄热病免疫活动，涵盖的人口有740万。
The risk variant of the FTO gene (fat mass and obesity associated) is common in the general population. 17 percent have double copies, meaning they have inherited it from both parents.
各种肥胖和肥胖相关的风险基因广泛存在于普通于人群中。
One of the most profound trends of our time is the mass migration of the world's population into urban areas.
我们这个时代最具有深远影响的一个趋势就是全球范围内大规模向城市迁移。
A mass vaccination campaign is being prepared in both countries to protect the population at risk and to prevent the spread of the disease to densely populated urban Settings.
这两个国家都在准备开展大规模预防接种运动以保护危险人口和防止该病向人口密集的城市住区蔓延。
It looks like California's regulators have triumphantly saved their population from the threat of mass poisoning once again.
看来，加州的管理者又一次成功地使她的民众免于大规模中毒的威胁。
In 2000 the World Health Organization cites the crisis as "the largest mass poisoning of a population in history."
2000年，世界卫生组织把这场危机称作“史上中毒人数最多的事件”。
And the number of U.S. states with more than 30 percent of their population topping a body mass index (BMI) of 30 tripled between 2007 and 2009.
在美国，超过30%人口超过体重指数(BMI)30的洲数量从2007年到2009年翻了三倍。
The so-called population urbanization not only means the increase in the numbers of cities and population, but also the tendency and process of the mass population gathering towards big cities.
所谓人口城市化不仅表现在城市数量的增多与城市人口比重的提高，而且还表现为众多人口日益向大城市聚集的趋势和过程。
Additional social stresses may also occur because of the population explosion or problems arising from mass migration movementsthemselves made relatively easy nowadays by modern means of transport 。
人口的猛增，或者大量的人口流动如今，现代交通手段使得这种流动相对容易起来产生的问题也会对社会造成新的压力。
More than 1.9 billion people, representing 28% of the world's population, live in the 23 countries that have implemented at least one strong anti-tobacco mass media campaign within the last two years.
23个国家在过去两年中至少开展了一项强有力的反烟大众媒体宣传运动，有19亿多人在这些国家生活，占到世界人口的28%。
Human population is drastically reduced. Perhaps 90% of species become extinct, rivalling the worst mass extinctions in the Earth's 4.5 billion-year history.
人口数量大幅减少，也许90%的物种会灭绝，情况堪与地球45亿年历史中最严重的大规模灭绝匹敌。
Additional social stresses may also occur because of the population explosion or problems arising from mass migration movements themselves made relatively easy nowadays by modern means of transport.
译文：人口的猛增，或者大量的人口流动如今，现代交通手段使得这种流动相对容易起来产生的问题也会对社会造成新的压力。
Bdditional social stresses may also occur because of the population explosion or problems arising from mass migration movements-themselves made relatively easy nowadays by modern means of transport.
因为人口的暴增或者大量人口流动(现代交通东西使这种流动相对容易)激发的种种问题也会对社会形态造成新的压力。
The mass death of working age population affected population age structure to make the burden coefficient of Ruili and Longchuan increased 0.06% and 0.05%.
大量劳动年龄人口的死亡影响了人口年龄结构，使瑞丽、陇川的人口负担系数分别增加了0.06%、0.05%。
Let me be quite clear that the Earth will not be destroyed, and there will be no mass deaths that will decimate the population.
让我很清楚，地球不会被销毁，不会有大规模的死亡，将毁灭的人口。
The same basic population C0 had been selected for four cycles with Dominant male sterile wheat by means of the half-sib mating recurrent selection and the mass recurrent selection programmes.
以显性雄性不育小麦为材料，采用改良半姊妹和混合轮回选择两种方案，对同一基础群体C_0进行了四轮选择。
Additional social stresses may also occur because of the population explosion problems arising from mass migration movements—themselves made relatively easy nowadays by modern means of transport.
由于人口的猛增或大量人口流动（现代交通工具使大量人口流动变得相对容易）所造成的种种问题也会增加社会压力。
Additional social stresses may also occur because of the population explosion problems arising from mass migration movements—themselves made relatively easy nowadays by modern means of transport.
由于人口的猛增或大量人口流动（现代交通工具使大量人口流动变得相对容易）所造成的种种问题也会增加社会压力。
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