An estimated 280,000 gold miners from across southern Africa suffered from lung disease brought on by dust.

非洲南部约28万名黄金矿工患有尘埃所造成的肺部疾病。

youdao

An estimated 280,000 gold miners from across southern Africa suffered from lung disease brought on by dust.

非洲南部约28万名黄金矿工患有尘埃所造成的肺部疾病。

youdao