The river system of the Mississippi River and the Missouri River is the longest river system in North America at 3,902 miles.

密西西比河和密苏里河水系是北美最长的水系，全长3902英里。

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The Brenton power plant draws water from Scotts River for its cooling system and releases the warmed water back into the river.

Brenton电厂从Scott河抽水供其冷却系统使用并把升温的水重新排回河中。

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The Mississippi River system and the Great Lakes are connected only through the man-made Chicago Sanitary and Ship Canal, which leads from Lake Michigan to the Illinois River.

密西西比河流域与五大湖之间唯一的纽带是人工挖掘的芝加哥环境卫生和航行运河，它连接于密歇根湖与伊利诺斯河之间。

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Officials could close shipping connections between Lake Michigan and the upper Mississippi River system.

VOA: special.2009.12.15

The Beijing News backs a proposal by the capital's mayor to follow the example of the Yangtze River Delta and Pearl River Delta regions and set up a joint air pollution control system between Beijing, Tianjin and Hebei.

BBC: China media: Death of Chavez

The Columbia and Snake River system allows large volumes of freight to be moved with negligible impact on air quality, and replacing this transportation capacity would require use of 120, 000 rail cars or 700, 000 trucks.

CNN: Snake River dam resolution called unfair

Recently FORBES took a boat ride on the river and its canal system.

FORBES: A most unromantic river