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来源:雅诚德英语网
The document concludes that the high risk of infant, child, and maternal mortality is associated with pregnancies where mothers are too young, too old, or have already had several children.
该文件的结论是,婴儿、儿童和产妇死亡率高的风险与母亲年龄太小、太大或已经有几个孩子的怀孕有关。