birthrate是什么意思_birthrate怎么读_音标'bɜ:θˌreɪt

birthrate是什么意思音标:英 ['bɜ:θˌreɪt]美 ['bɜ:θˌreɪt]

n. 出生率

n. the ratio of pve births in an area to the population of that area; expressed per 1000 population per year

birthrate的用法和例句：

1.As birthrates fell, they made things worse.

出生率下降 他们却火上浇油