令人惊讶的是，声音发生变化只有当妇女以介绍语句如“嗨，我是一个在加州大学洛杉矶分校的学生”时才会出现。
Surprisingly, voice changes occurred only when the women spoke an introductory sentence (" Hi, I'm a student at UCLA ") and not when they pronounced vowels.
只有当更多的妇女获得了有技能的助产师和产科紧急医护时，孕产妇死亡率才可能下降。
Maternal mortality will not go down until more women have access to skilled attendants at birth and emergency obstetric care.
只有当更多的分娩能够得到熟练接生人员的协助，以及更多的妇女能够获得紧急产科医护时，才能降低持高不下的孕产妇死亡率。
The stubbornly high figures for maternal mortality will not go down until more deliveries are attended by skilled birth attendants, and more women have access to emergency obstetric care.
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