单词	karren
释义	karren /ˈkarən / plural noun Geology Grooves and fissures, typically separated by sharp ridges, produced in a hard limestone surface by water erosion.As a result of karren development the fissures are widened and channel edges are eroded.... In the northern limestone Alps large bare karst areas with impressive Karren exist. Karren are particularly common on limestone pavements. Origin Late 19th century: from German Karren.
随便看	levelling screw levelly levelness level of attainment level up lever leverage leveraged buyout lever escapement leveret Leverhulme, 1st Viscount Leverkusen Le Verrier, Urbain lever watch Levi leviable leviathan levigate levigation levin Levi, Primo levirate Levi's levitate levitation

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