其中三角洲沼泽平原是最好的聚煤场所。

The marginal deltaic swamp plain is an excellent place for...

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北美等濒临北冰洋的低洼沼泽平原的命名。

SiliCa, and North America that border on the Arctic Ocean.

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中部的平原地带以众多的湖泊，沼泽和低岭为特点。

The central area is characterized by many lakes, bogs and low ridges.

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中部的平原地带以众多的湖泊，沼泽和低岭为特点。

The central area is characterized by many lakes, bogs and low ridges.

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