1. After the war there was a bulge in the birthrate.
战后出生率一度激增。
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2. 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。
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3. The European country with the highest birth rate is Ireland.
出生率最高的欧洲国家是爱尔兰。
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4. Several factors have been adduced to explain the fall in the birthrate.
有几个因素已被援引来说明出生率降低的原因。
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5. 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。
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6. Birth rate and the stork population are connected.
出生率与鹳的数量有关。
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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. Scientists are also working to develop chemicals to control the birthrate 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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9. 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。
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10. 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.
11. 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.
