sand dune

1.Dragging the fully laden boat across the sand dunes was no mean feat.

将满载船拖过沙丘是一件了不起事。

2.Dipus sagitta showed a high density and was dominant in desert-type habitats, especially in sand dune.

聚分析结果显示, 研区啮齿动群落可以分成荒漠型群落和绿洲型群落。