He's also been taking classes at the American River College since he was seven years old.

自他七岁起，便在美国河流学院旁听。

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Forming much of the border between the states of Oregon and Washington, the Columbia river is the largest North American river, by volume, that flows into the Pacific Ocean.

流入太平洋的哥伦比亚河构成了俄勒冈州与华盛顿州大部分的州界，以流量计它是北美最大的河流。

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In 2009, American filmmakers produced a documentary called Big River Man.

2009年，美国电影人制作了一部名为《大河男人》的纪录片。

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In the same year, Japanese planes sank an American gunboat in the Yangtze River in China.

VOA: special.2011.05.05

Lord Ashburton said Britain regretted that it had not made some explanation or apology for the sinking of an American boat in the Niagara River.

VOA: special.2009.02.05

So,in the spring of eighteen forty-six, he ordered American soldiers to the Rio Grande River.

VOA: special.2009.02.26

Such exposure is apparent in Rosso's Mannerist "Moses Defending the Daughters of Jethro" (1523) in the Uffizi museum in Florence, which resembles nothing so much as a brawl on an American river barge.

WSJ: Il Rosso Fiorentino | Deposition | A Maelstrom of Grief | Masterpiece by Peter Plagens

An invasion of American crayfish in a Northumberland river could have a "devastating" impact on the native species, the Environment Agency warned.

BBC: American signal crayfish invade Northumberland river

Rivers in Alaska, California and the South are among the 10 most endangered, according to a report released Tuesday by American Rivers, a leading river conservation group.

CNN: Report lists America's 10 most endangered rivers