仔细研究穷人的生育行为是很重要的，因为有大量关于婴儿高死亡率的“替代效应”的文献。
A closer look at the fertility behavior of the poor is important because of the extensive literature on the "replacement effect" of high infant mortality.
产妇的高死亡率令人担忧，说明还是存在很大的问题。
The maternal mortality rate is particularly worrying, pointing to serious problems.
我们需要做两件事：加强卫生系统，并同时抵御高死亡率的疾病。
We need to do both: strengthen health systems while also combating high-mortality diseases.
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