birth rate
英 [bə:θ reit] 美 [bɚθ ret]

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.)

1. The birth rate in this city is almost constant.
   这城市的出生率几乎是不变的。
2. 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 rate
Why 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...