| 释义 |
birthrate 也作 birth rate AHD[bûrthʹrāt'] D.J.[ˈbɜːθˌreɪt]K.K.[ˈbɝθˌret]n.（名词）- The ratio of total live births to total population in a specified community or area over a specified period of time. The birthrate is often expressed as the number of live births per 1,000 of the population per year. Also called natality 出生率：某一特定集团或区域在指定时间段内总出生人口与总人口的比率。出生率常以每年每1000人口中的出生人数来表示 也作 natality
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