| 单词 | seif dune |
| 释义 | seif dune seif dune AHD: [s³f, sºf] D.J. [se!f, sa!f]K.K. [sef, sa!f]n.（名词）A sharp-crested longitudinal sand dune common to the Sahara and ranging up to 300 m (900 ft) in height and 300 km (200 mi) in length.剑型沙丘：尖冠状纵形沙丘，常见于撒哈拉沙漠，可高达300米（900英尺），蜿蜒300公里（200英里）语源:1. Arabic sayf [sword] Arabic sayf [sword] 2. from Aramaic sayp³ ; akin to perhaps ultimately akin to Greek xiphos from Aramaic sayp³ ；类似于 perhaps ultimately akin to Greek xiphos |
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