所有沙丘形成了一个更大的沙丘，几乎包围了整个湖泊。
All of the sand dunes, however, form part of a larger dune field nearly encircling the lake.
这张照片展示了某个极地陨坑，陨坑中还保存着一些夏季冰的痕迹，在风的作用下形成了一些美丽的沙丘。
This image shows part of a polar crater that still holds on to some summer ice, as well as beautiful sand dunes sculpted by the wind.
在旱季的时候，大约8月至11月间，强风将泥沙吹进内陆，形成高高的呈新月形状的沙丘。
During the dry season, roughly August to November, strong winds push sands inland, forming tall, crescent-shaped dunes.
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