单词 | esker |
释义 | esker UK ['es.kər] US [-kɚ] noun countable specialized ■a long, narrow, raised line of earth, small stones and sand left on the landscape where melted ice once flowed underneath a glacier 蛇(形)丘(一种狭长隆起的线状地貌,由土壤、细石和沙形成,此等沙石是以往存在于冰川下的冰融水所遗下的) |
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