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%。
It was once assumed that improvements in telecommunications would lead to more dispersal in the population as people were no longer forced into cities.
人们曾经认为，随着人们不再被迫进入城市，电信的发展将导致人口的进一步分散。
That should help us determine how to prevent further decline in the population.
这将有助于我们确定如何防止人口的进一步下降。
Doctors and nurses attached special importance to any potential symptoms in the population.
医生和护士非常重视人群中任何潜在的病症。
Some species of Arctic birds are threatened by recent sharp increases in the population of snow geese, which breed in the Arctic and are displacing birds of less vigorous species.
某些种类的北极鸟受到近来雪雁数量急剧增加的威胁，这些雪雁在北极繁殖，并且正在取代生命力较弱的鸟类。
Newspapers bemoaned a lack of grit, both on the roads and in the population.
报纸指责无论在路上还是在人群里的人们缺乏毅力和勇气。
But, he noted, "overall, the levels of guilt and distress tend to be low in the population."
他说。但是他又指出“罪恶感和痛苦感存在的趋势，只限于少部分人群。”
The majority of the reported cases and deaths have occurred in the population aged over 15 years.
所报告的大多数病例和死亡发生在15岁以上的人群中。
Yet recent declines in the population of these essential insects threaten the lucrative agricultural industry.
可是，最近蜜蜂数量的减少，威胁到这些收益良好的农副产品的生产。
So far, it is not clear whether the strain is spreading beyond farms to cause infections elsewhere in the population.
到目前为止，不清楚这个菌种是否正在向农场造外其他地方的人口蔓延。
He writes that nine out of ten persons in the population were affected by some of this country's abhorrent diseases.
他写道，每十个人中就有九个得过那让人憎恶的疾病。
Female infanticide is common and the ratio of males to females in the population can be a frightening 10:7 in some areas.
在有些地区溺杀女婴是平常的事，男女人口比例也可怕地只有10：7。
Yet the recent surge in the population of millionaires and billionaires is likely to slow, at least in the near term.
不过，近来百万富翁和亿万富翁人数增加的速度有所放缓。
The alternative hypothesis that you can then entertain is that the proportions are different in the population of interest.
那么，另一个可接受的假设是在所研究的总体中，各种回答所占比例不同。
As is shown in the curve graph, there has been a rapid increase in the population all over the world in the past five years.
29如曲线图所示，最近5年来世界人口飞速增长。
The alternative hypothesis -- that a difference in proportions exists in the population -- is statistically more likely to be true.
另一种假设 — 对象总体中存在着比例差异 — 在统计上可能更正确。
In America prospects for the "multi-family apartment" rented sector are helped by the "echo-boomers", a youthful bulge in the population.
在美国，由于“回声潮一代”——即数量突增的年轻人口——起到的促进作用，“多户公寓”租赁业的前景向好。
This affects risks for entrepreneurs taking on new technologies as well as basic technological literacy and skills in the population.
这会影响到企业家采用新技术的风险，以及人口的基本技术素养和技能。
One implication of this work is that reaction times in the population will probably improve with the rise of fast-action video-games.
这项研究的一个启示就是：大众的反应时间将会随着需要快速反应的电子游戏的兴起而改善。
This is important information whether or not any of [the genes involved] turn out to be common causes of schizophrenia in the population.
这项研究是“描述基因缺失如何与大脑机能障碍相关的重要步骤，”她接着说，“无论有没有基因被证明是精神分裂症的普遍病因，这都是重要的信息。”
Impossible to pull off, but worth considering: what if we skipped a growth cycle in the population and everyone in a generation had just two kids?
让我来设想一下这个不可能实现的事吧：如果我们跳过人口增长的规律让每一个同代人都有两个孩子会怎样？
Scientific evidence on the distribution of cancer in the population can be obtained through carefully planned and executed epidemiological studies.
通过慎重计划和开展的流行病学研究，可获得关于癌症在人群中分布情况的科学依据。
By early 2000, it seemed clear to Bygren that the feast and famine years in 19th century Norrbotten had caused some form of epigenetic change in the population.
很显然，19世纪北搏腾丰年和歉年导致了该地区人口外基因改变，这点早在2000年初本内已经很清楚。
However our research shows that preferences may instead be explained by responses to different environmental factors like a low level of health in the population.
然而，我们的研究表明，这种喜好也会受到环境因素的影响，比如健康状况的好坏。
These health benefits may help to explain the 'French paradox' - a low incidence of coronary heart disease in the population, despite a diet high in saturated fat.
这可能有助于解释“法国悖论”——尽管地中海居民摄入了更多的饱和脂肪，却有更低的冠心病发病率。
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。
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。
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