concave ground;depression;kar;mulde;valley ;

These mathematical definitions make basic landform shape concept of limit determine nat.
继而给出了如斜坡、山、山脊、凹地、谷地、鞍部等基本地貌形态的数学定义.
来源:网络文摘精选A pool of mud boils near Dallol Volcano, in Ethiopia's remote Danakil Depression.
一池泥浆在位于埃塞俄比亚远郊达纳基尔凹地(DanakilDepression) 的宽干谷(Dallol)火山附近沸腾着.
来源:互联网摘选The hollow was full of trees but the higher ground was covered with grass.
凹地树木成林,但高处长满青草.
来源:《简明英汉词典》The clustered houses of the village peeped out from the woody hollow below.
村庄里团团簇簇的房屋,从林木葱笼的凹地中探出头来.
来源:词典精选例句
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