但是，从1990年到2005年孕产死亡率仅下降了5%。

However, between 1990 and 2005 the maternal mortality ratio declined by only 5%.

youdao

Conde - Agudelo a, Belizan JM, Lammers C .，《与拉丁美洲少女怀孕有关的孕产-产前发病率和死亡率：截面研究》。

Conde-Agudelo a, Belizan JM, Lammers C. Maternal-perinatal morbidity and mortality associated with adolescent pregnancy in Latin America: Cross-sectional study.

youdao