birth rates

英 美
  • 生率
  • birth n.分娩;出生;诞生;血统v.分娩;产生adj.有血亲关系的
  • rates n.比率;速度;价格;费用;等级v.认为;估价;定等级;值得;怒斥;责骂
名词 birth rate:
  1. the ratio of live births in an area to the population of that area; expressed per 1000 population per year