根据美国疾病控制和预防中心的报告，美国出生率降至有记录以来最低水平。降低的出生率将会导致人口增长放缓。
The U.S. birth rate fell to its lowest level ever recorded, according to a report from the Centers for Disease Control and Prevention. The drop would have been greater, but women over age 30 are having more children.
以下为原文节录，仅供导读。完整报道与著作权均属原媒体与原作者所有，请点击下方链接前往原始出处阅读。
前往原文 / Original Source →