| 单词 | birth rate |
| 释义 | > as lemmasbirth rate birth rate n. the ratio of the number of births per year to the population.Birth rate is typically calculated per thousand people per year. ΘΚΠ the world > relative properties > number > probability or statistics > [noun] > statistics > study of > demographics birth rate1856 demography1880 natality1885 demographics1892 nuptiality1900 survivorship1949 1856 Jrnl. Statist. Soc. 19 288 The marriage rate, which was low, is now slightly above the average rate; the birth rate is high. 1919 W. R. Inge Outspoken Ess. 69 In the Rhondda Valley the birth-rate is still about forty. 2009 Canberra Times (Nexis) 8 June a9 Significant falls have occurred in birth rates in most less developed countries. < as lemmas |
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