柯林斯詞典birth rate (also birth-rate) (birth rates) 1. N-COUNT The birth rate in a place is the number of babies born there for every 1000 people during a particular period of time. 出生率 America's birth rate fell to a record low last year. 美國去年的出生率降到了創(chuàng)紀(jì)錄的最低點。 返回 birth rate劍橋詞典the number of births that happen during a period of time in a particular place 出生率 返回 birth rate