flowing sand

英 美
  • 流砂
  • flowing adj.流动的;平滑的动词flow的现在分词形式.
  • sand n.沙;沙子;沙滩;黄灰色vt.撒沙;打磨;以沙掩盖
    1. Sand under quick condition is often called quicksand.
      通常把快速流动的沙叫做流砂。