birth rate
n.
人口出生率；
变形
复数：birth rates
英英释义
birth rate [ 'bə:θreit ]
n.the ratio of live births in an area to the population of that area; expressed per 1000 population per year
同义词：birthratefertilityfertility ratenatality
双语例句
用作名词(n.)
The birth rate in this city is almost constant.
这城市的出生率几乎是不变的。
What is the most effective method of birth control?
控制出生率的最有效的方法是什么？
权威例句
Calculation of instantaneous birth rateWhy is the teen birth rate in the United States so high and why does it matter?
Density-dependent birth rate, birth pulses and their population dynamic consequences
Determinants of the increasing cesarean birth rate. Ontario data 1979 to 1982.
Why is the Teen Birth Rate in the United States so High and Why Does it Matter?” NBER working paper 17965. Melissa
Utility of percentage of births to teenagers as a surrogate for the teen birth rate.
Thromboprophylaxis improves the live birth rate in women with consecutive recurrent miscarriages and hereditary thrombophilia
Live birth rate is significantly higher after blastocyst transfer than after cleavage-stage embryo transfer when at least four embry...
Does troop size of wild Japanese macaques influence birth rate and infant mortality in the absence of predators?
What is the most relevant standard of success in assisted reproduction? The singleton, term gestation, live birth rate per cycle ini...
1. After the war there was a bulge in the birth rate.
战后出生率一度激增。
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2. Several factors have been adduced to explain the fall in the birth rate.
有几个因素已被援引来说明出生率降低的原因。
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3. 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。
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4. Birth rate and the stork population are connected.
出生率与鹳的数量有关。
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5. America's birth rate fell to a record low last year.
美国去年的出生率降到了创纪录的最低点。
《柯林斯英汉双解大词典》
6. The European country with the highest birth rate is Ireland.
出生率最高的欧洲国家是爱尔兰。
《柯林斯英汉双解大词典》
7. It's estimated that birth rate has dropped dramatically over the past decade.
据统计，在过去十年中，人口出生率急剧下降。
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8. 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。
youdao
9. 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。
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10. The impact of dropping birth rate on developing countries may not be immediate but disastrous.
生育率下降对发展中国家的影响可能不是立竿见影的，而是灾难性的。
youdao
11. 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。
youdao
12. 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。
youdao
13. 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。
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14. 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。
youdao
15. They're more likely to have children of low birth rate and more birth complications.
高龄人群可能会导致低出生率和更多的出生并发症。
youdao
16. 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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17. The rise has been caused by an increase in the birth rate and greater longevity.
人口的增加主要是因为出生率的上涨和寿命的延长。
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18. 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。
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19. 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%。
youdao
20. 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。
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21. But the birth rate is also connected to education and gender equality.
但出生率还与教育和性别平等有关。
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22. The birth rate among professional women is particularly low.
职业女性的生育率则更低。
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23. Tunisia now has a birth rate similar to that of France.
突尼斯目前的生育率与法国相仿。
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24. India is one of the countries with a very high birth rate.
印度是出生率很高的国家之一。
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25. 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？
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26. Tajikistan had an particularly high birth rate and the highest rate of population increase of all the former Soviet republics.
塔吉克斯坦有着特别高的出生率，也是所有前苏联国家中人口增长最快的。
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27. Between 1947 (when abortion was legalised) and 1957, the birth rate was cut in half due to abortions.
1947年(当时人工流产已经合法化)到1957年间，因为流产手术，出生率减半。
youdao
28. But lowering birth rate need not be so draconian.
但降低生育率无需如此严苛。
youdao
29. 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。
youdao
30. 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。
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birth rate
