This is fen country – the mills drive pumps that drain the land.

这是一个沼泽国 - 这些工厂启动水泵排干地面积水。

《柯林斯英汉双解大词典》

Areas that are naturally at exactly sea-level are always coloured blue regardless, that's why this map of England's fen-land is peppered with blue, even at + 0m: fenland at + 0m.

当然低于海平面的地区总是蓝色，这就是为什么即使是在+ 0m的时候英格兰的沼泽地也会有零星的蓝点。

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The Great Fen Project aims to create the wetland between Huntingdon and Peterborough by obtaining land adjacent to the Holme Fen and Woodwalton Fen nature reserves.

BBC: Fry's wetland gift for his mother

Suffolk Wildlife Trust (SWT) wants 40 acres (16 hectares) of arable land to link to its existing reserve at Arger Fen near Sudbury.

BBC: Suffolk Wildlife Trust appeal to buy land for dormice