barchane

基本解释

Another kind of dunes are barchan dunes.
还有一种类型叫做弧形沙丘。
Parabolic dunes are the opposite of barchan dunes.
新月型沙丘则跟弧形沙丘相反。
Barchan dunes are produced by strong winds blowing across a level surface and are crescent shaped.
强风吹过表面形成弧形沙丘而就是新月形。
A large barchan (crescent-shaped) dune, in a region where some dunes have been observed shrinking over several years.
大型新月形（月牙形）沙丘在一个地区，那里的一些沙丘已经观察几年缩小。
The scattered single barchan dunes on the non sand bed possess movability and form unstability except the high large crescent sand mountain.
非沙质床面零星分布的单个新月形沙丘具有明显的移动性和形态的不稳定性（高大新月形沙山除外）。