名詞 birthrate:

1. the ratio of live births in an area to the population of that area; expressed per 1000 population per year
   同義詞：birth rate, fertility, fertility rate, natality

1. The birthrate in this city is increasing at a ratio of0.6 to a thousand every year.
   這個(gè)城市的出生率以每年千分之0．6的比率上升。
2. The birthrate is on the decrease.
   人口出生率正在下降。

birthrate 也作 birth rate

n.（名詞）
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 ,000 of the population per year.Also called natality
出生率：某一特定集團(tuán)或區(qū)域在指定時(shí)間段內(nèi)總出生人口與總?cè)丝诘谋嚷?。出生率常以每年?00人口中的出生人數(shù)來表示也作 natality