VOA慢速英语2016.08.06
[audio]http://sound.yywz123.com/tingbbs/voa/voa20160806.mp3[/audio]The days immediately before and after childbirth appear the most dangerous for mothers and babies. ______________________________. ______________________________.据世界卫生组织估计，每年有超过30万母亲死于孕期或孩子出生时期。
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