sediment of interior river 内河淤泥
interior river
内陆河流
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Typically this happens in the interior of large continents, in a protected river valley or on mountain slopes shrouded in mist.
BBC: The quest to see China��s extraordinary frozen fog
Concentration for most pollutants remains high despite legislation passed in 2002 to control emissions in ten of China's biggest cities and several river valleys that provide industrial arteries into the interior from the heavily populated coasts.
FORBES: Pollution And Prosperity
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