中文翻译与英英解释

n.
【地质学；地理学】蛇形丘。

(geology) a long winding ridge of post glacial gravel and other sediment; deposited by meltwater from glaciers or ice sheets

An esker is a long winding ridge of stratified sand and gravel, examples of which occur in glaciated and formerly glaciated regions of Europe and North America. Eskers are frequently several kilometres long and, because of their peculiar uniform shape, are somewhat like railway embankments.