单词	esker
释义	esker /ˈɛskə / noun Geology A long ridge of gravel and other sediment, typically having a winding course, deposited by meltwater from a retreating glacier or ice sheet.Wetlands may overlie important groundwater aquifers, especially on moraines, eskers, and fluvioglacial deposits.... The long sand and gravel bodies called eskers were formed in subglacial cave-like tunnels where sand and gravel were deposited by flowing water. A large interior plateau contains dense forests, thousands of lakes and peat bogs, and rocky infertile soils associated with a glacially modified landscape with numerous drumlins and eskers. Origin Mid 19th century: from Irish eiscir.
随便看	persecute persecutee persecuter persecution persecutional persecution complex persecution mania persecution maniac persecutive persecutor persecutory persecutress persecutrix Perseid Perseids perseity Persephone Persepolis Perseus perseverance perseverant perseverantly perseverate perseveration perseverative

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