Low Birth Rates的意思|示意

In Japan, for instance, birth rates fell below the replacement rate of 2.1 children per woman in the mid-1970s and have been particularly low in the past 15 years.

比如在日本七十年代中期，出生率降至相当于平均每个妇女生2.1个孩子以下，而且在过去的15年里一直明显的偏低。

Russia also has low birth rates.

俄罗斯的出生率也很低。

Increased rates of cancer, infant mortality and low birth weights leading to cognitive impairment have been linked to radiation exposure for decades.

不断增长的癌症发病率、婴儿死亡率和低出生体重导致的认知能力损坏被认为与数十年直接辐射相关。

China's one-child policy will keep birth rates low, but as life expectancy continues to increase, so will the dependency ratio, reducing the country's potential for growth.

中国的独生子女政策将保持人口出生率低下，但是由于平均寿命继续提高，抚养比率将会上升，这将降低国家的发展潜力。

All the more so for us, as we are a small country with low birth rates.

我们小国寡民，加上生育率偏低，更需要这么做。

Over time, low birth rates lead not only tofewer children, but also to fewer working-age people just as the percentage ofdependent elders explodes.

随着时间累积，低生育率不止会儿童数量减少，随着需要人照顾的老年人人口膨胀，处于工作年龄段的人口数量也会减少。