人口学上叫做“赡养比”，2030年，大约是四个人要照顾六个人

来源: ThisMyWords 于 2018-06-29 06:47:48 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.