barchane

常見例句

• Another kind of dunes are barchan dunes.
  還有一種類型叫做弧形沙丘。
• Parabolic dunes are the opposite of barchan dunes.
  新月型沙丘則跟弧形沙丘相反。
• Barchan dunes are produced by strong winds blowing across a level surface and are crescent shaped.
  強風吹過表麪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）沙丘在一個地區(qū)，那裡的一些沙丘已經(jīng)觀察幾年縮小。
• The scattered single barchan dunes on the non sand bed possess movability and form unstability except the high large crescent sand mountain.
  非沙質(zhì)牀麪零星分佈的單個新月形沙丘具有明顯的移動性和形態(tài)的不穩(wěn)定性（高大新月形沙山除外）。
• The Martian North Pole is ringed by many similar fields of barchan sand dunes, whose strange, smooth arcs are shaped by persistent Martian winds.
  火星北極被許多類似的弧形沙丘包圍著，由於一直不斷吹著的火星風侵蝕出了這樣奇怪而又平滑的形狀。
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