As they flow south, the five rivers converge.

这5条河向南流，最终汇合在一起。

《柯林斯英汉双解大词典》

The river of forgetfulness, one of the five rivers in Hades.

忘川忘却之河，遗忘之河，是冥府中五条河流之一。

youdao

Phlegethon (3rd River) - A river of fire, one of the five rivers of Hades.

火焰之河– 音译弗莱格桑河，系冥界五河之一。

youdao

We took in 360 degrees of unobstructed views - the five boroughs, the bridges and rivers, the ocean, even downtown (a sight denied at the top of Rockefeller Center, blocked by Empire).

BBC: At 80, the Empire State Building strikes back

The project would involve the building of five dams on two fast-flowing rivers that run into the Pacific - two on the river Baker, and three on the river Pascua.

BBC: Chile court rules in favour of Patagonia HidroAysen dam

The plan involves building five dams on two Patagonian rivers, flooding 5, 900 hectares (14, 600 acres) of nature reserves.

ECONOMIST: The discontents of a healthy democracy