柯林斯英汉双解大词典
barchan (also barkhan or barchane or barkan)
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1.
N a crescent-shaped shifting sand dune, convex on the windward side and steeper and concave on the leeward 新月形沙丘
双语例句
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These strangely shaped dunes are known as barchan dunes and are common on both Earth and Mars.
形状怪异的沙丘是地球和火星上比较常见的新月沙丘。
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It is known for its dramatic dunes, including the crescent-shaped barchan dunes shown here, some of which can reach 100 feet (30 meters) high and 1,200 feet (370 meters) wide.
这里因有着壮观的沙丘而知名，比如图中的这些半月状的弧形沙丘，有些沙丘甚至可高达100英尺(30米)，宽达1,200英尺(370米)。
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