The birth rate in the 21st century may be much lower than it was in the 20th.
21世纪的出生率可能比20世纪低得多。
Scientists are also working to develop chemicals to control the birth rate in deer populations.
科学家们也在努力研制化学物质来控制鹿群的出生率。
The newly domesticated animals behaved better, were easier to control, and may have enjoyed a higher birth rate, which in turn yielded greater milk supplies.
新驯养的动物表现更好，它们更容易控制，出生率也更高，且反过来也会提供更多奶源。
Martine puts it down to, among other things,soap operas and instalment plans introduced in the 1970s. Both played an important9 although indirect, role in lowering the birth rate.
玛蒂娜将其归因于20世纪70年代推出的肥皂剧和分期付款计划。尽管是间接的，两者在降低出生率方面都发挥了重要的作用。
Martine puts it down to, among other things, soap operas and installment plans introduced in the 1970s. Both played an important, although indirect, role in lowering the birth rate.
玛蒂娜将其归因于20世纪70年代推出的肥皂剧和分期付款计划。尽管是间接的，但两者在降低出生率方面都发挥了重要的作用。
The birth rate in Europe is rising slightly
欧洲人口出生率略有上升
The birth rate plunged from the highest in Canada to the lowest.
该省的出生率在加拿大也从第一骤降至最后一名。
Birth rate, gender equality, education and poverty are inextricably linked.
生育率、性别平等、教育都与贫困不可避免地相互关联。
The CDC study did not explore why the teen birth rate is at an all-time low.
疾病控制中心的研究并没有探究出为什么青少年出生率总是处于低比率状态。
As Indonesia prospers, its birth rate is falling; South Asia's remains very high.
随着印度尼西亚走向繁荣，该国的出生率正在下降，而南亚的出生率则依旧保持在很高的水平上。
A: In Europe, what people really care about is not the marriage rate but the birth rate.
回答：在欧洲，人们真正关心的不是结婚率而是出生率。
With higher life expectancy and lower birth rate, South Korea is becoming an aging nation.
韩国较高的平均寿命以及较低的出生率使韩国一步一步走向老龄化。
The birth rate among teens overall in the United States is rising after 14 years of decline.
美国青少年人群中的婴儿出生率在经历十四年的持续下降之后开始上升。
That is not trivial, but Dr Grant reckons it is cheaper than other ways of boosting the birth rate.
这些价值颇高，但是格兰特先生这种方式并其它提高婴儿出生率的方式要更省钱。
One of her major tasks will be to encourage family-friendly policies to boost Japan's low birth rate.
福岛的主要任务之一将是鼓励“家庭友好”政策，提高日本的出生率。
In Japan, the birth rate is so low that the population is expected to shrink 21% between now and 2050.
在日本，出生率非常低，以至于人口从现在到2050年间，将减少21%。
SPIEGEL: Well, most young Arabs can now read and write, but how is the birth rate actually developing?
镜报：大多数阿拉伯年轻人都有读写能力，那么出生率到底是如何演变的呢？
Before 1970 the birth rate remained level. Then in 1970 it fell until it reached 30 per thousand in 1980.
1970年之前，出生率保持平稳，从1970年起，出生率开始下降，直至1980年的千分之三十。
But the preterm birth rate-defined as babies born before 37 weeks gestation-doesn't tell the whole story.
虽然早产率一般被定义为在妊娠期达到37周之前的分娩，但并不能断定那样就是安全的。
SINCE the 1970s China's birth rate has plummeted while the number of elderly people has risen only gradually.
20世纪70年代以来，中国的人口出生率就直线下降，尽管只有老年人的人口数量逐渐增加。
That is equivalent to the drop in the birth rate associated with a woman having two extra years of schooling.
这相当于女性多上两年学引发的女性生育率的下降。
It is worked out by dividing the birth rate in a particular period by the number of women of childbearing age.
它的计算方法是用特定时间内的出生率除以育龄妇女的数量。
The birth rate among female university graduates is just below 2.1, the level needed to maintain a population.
大学毕业女性的生育率已降至2.1以下，仅够维持现有人口的水平。
Had it maintained the same birth rate as Britain since 1800, France would today have 150m people, surpassing Russia.
如果其从1800年以来，一直保持与英国相同的人口出生率的话，今天法国会有1.5亿人，比俄罗斯还多。
However, relatively few of them were born in December, historically the month with the eighth-highest birth rate.
但他们中很少有人是在12月出生的，这个月份历年的出生人数排在12个月中的第八位。
That can no longer be taken for granted. The decline of marriage is also contributing to the collapse in the birth rate.
这将不再是理所当然的了，随着结婚率下降，导致出生率下降。
Between 1991 and 2005 the teenage birth rate declined by 34%, according to the National Centre for Health Statistics.
根据国家健康数据中心，1991年至2005年间，青少年生育率降了34%。
Although the birth rate has edged up since then to 1.5, it would take a huge social change to push it as high as is needed.
尽管此后生育率略微上升到1.5，但将出生率推动到所需要的高比率将带来巨大的社会变革。
Thanks to the availability of infertility treatments the birth rate for women over 30 has risen a bit in recent years.
随着医学和治疗不孕症的进步，大龄女性的生育率已经有所上升。
It would be interesting to examine the role played by the state in these two demographic giants in regulating the birth rate.
研究这两个人口大国在控制人口出生率中扮演的角色将会是很有趣的一件事情。
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