流沙地

例句：

1. 1. The desert is a harsh environment that requires careful navigation.
   沙漠是一个苛刻的环境，需要小心导航。
2. 2. The sand dunes are a popular destination for tourists during the summer months.
   沙丘是夏天游客的热门目的地。
3. 3. The wind has blown away the sand from the desert floor.
   风已经把沙漠地面的沙吹走了。