Although some rivers have been recolonized, the unique genes of the original populations have been lost.

尽管一些河流被重新殖民，但原始种群的独特基因已经消失。

youdao

On every continent some rivers are drying out, threatening severe water shortages.1?

每一块大陆上都有河流枯涸，水资源紧缺日益加剧。

youdao

When we live, my lady, we always have to cross some rivers and hills, but we can always enjoy the sunshine.

人活着，就是要趟河过山，但我们还是可以享受那阳光的。

youdao

Some stories told how others followed the rivers and streams with pans.

VOA: special.2010.04.25

It says in some places, a majority of displaced people get their water from rivers, lakes or streams and this is posing a major health risk.

VOA: standard.2009.09.20

Some dams on rivers feeding the Mekong have disrupted fish populations.

VOA: standard.2010.01.11

Floodwaters are subsiding in some areas but some rivers are reported to be still rising rapidly in Amazonas state.

BBC: Brazil flood victims return home

Some of the rivers named in their club title, proclaimed on their jackets, have been polluted by red sludge.

BBC: Villagers despair in Hungary's red wasteland

The River Forecast Center for the Northeast was reporting that some of these rivers may not crest for two to three days.

WHITEHOUSE: Press Briefing