The Yangtze River is the longest river in China and the third longest in the world.

扬子江是中国最长的河流,也是世界第三长河。

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At some 2,300 miles in length, the Mississippi is the longest river in the United States.

密西西比河全长约2300英里，是美国最长的河流。

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Although the Yangtze is the longest river in China, it is shorter than the Nile, the longest river in the world.

长江是中国最长的河流，但它比世界上最长的河流尼罗河短。

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Sometimes we'd have that whole river to ourselves for the longest time...

VOA: special.2010.03.21

Guido Gelli, director of science at the Brazilian Institute of Geography and Statistics, told the Brazilian network TV Globo that today it could already be considered as a fact that the Amazon was the longest river in the world.

BBC: NEWS | Americas | Amazon river 'longer than Nile'

The Missouri is the longest river.

NPR: New Citizenship Test Gets Dry Run

The archive is thought to be the longest for any river in the world.

BBC: Thames archive reveals long nitrate rise