Or some pandemic disease may break out in a heavily polluted area.

或有朝一日，某种流行病会在污染严重的地区爆发。

youdao

He had noted a sharp increase in cases of cancers in the polluted area.

他已经注意到了在污染的地区癌症病例急剧的增加。

youdao

I fear I may find myself amid the debris of an earthquake one day. Or some pandemic disease may break out in a heavily polluted area.

我害怕有一天自己会被埋在地震的残骸中；或有朝一日，某种流行病会在污染严重的地区爆发。

youdao

The total polluted area is about 40, 000 square kilometers.

WHITEHOUSE: President Obama Makes a Trilateral Announcement with the Presidents of Russia and Kazakhstan | The White House

The cleanup will take at least three months, and authorities have forced hundreds of thousands of people on an annual Roman Catholic pilgrimage to change their route to avoid the polluted area.

CNN: Damage from Spanish mine spill may be limited

The most far-reaching: revitalization of the area around the hopelessly polluted Inner Harbor, a one-mile-long channel that runs from Onondaga Lake to within a few blocks of downtown.

FORBES: Magazine Article