去年，全球幼儿死亡率是近年来首次下降到低于1000万。

Last year, global mortality of young children dipped below 10 million for the first time in recent years.

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这些地区在世界上有最高的婴幼儿死亡率、土地贫瘠和癌症比率。

These are areas, where close by are some of the highest infant mortality, infertility and cancer rates in the world.

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幼儿死亡率的死亡年龄由母亲相继生育的平均时间间隔和婴儿出生登记时的平均年龄决定。

The age at death for early child mortality was determined by the mean interval between successive births and the mean age of neonates at registration.

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