| 单词 | sand shadow |
| 释义 | > as lemmassand shadow sand shadow n. an accumulation of sand to the lee of an obstruction. ΘΚΠ the world > the earth > structure of the earth > structural features > deposited by water, ice, or wind > [noun] > wind-blown drifta1400 wave1789 sand glacier1875 lunette1940 sand shadow1941 1941 R. A. Bagnold Physics of Blown Sand & Desert Dunes xiii. 188 Deposits caused directly by fixed obstructions in the path of the sand-driving wind... These sand shadows and sand drifts are dependent for their continued existence on the presence of the obstacle. 1971 I. G. Gass et al. Understanding Earth xiii. 184/2 Left behind protecting shells or pebbles are elongate mounds of sand (‘sand-shadows’) which give the beach a distinctive appearance. < as lemmas |
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