全世界有更多的儿童接受中小学教育，许多国家的人口寿命延长，婴幼儿和产妇死亡率降低。

Around the world more children are attending primary and secondary school.

youdao

全世界有更多的儿童接受中小学教育，许多国家的人口寿命延长，婴幼儿和产妇死亡率降低。

Around the world more children are attending primary and secondary school.

youdao