sandedadj.铺沙的；满地是沙的；沙地的sandn.沙；沙子；沙滩；黄灰色vt.撒沙；打磨；以沙掩盖sand dune habitat沙地生境sand infiltration沙渗滤sandworm eruption[医] 游走性幼虫病sand driving wind起沙风sandbox structure砂箱结构sand-bed filter砂床过滤器sand spun casting砂型离心浇注sand distribution砂体分布sand-dust event沙尘天气sand-wich panel夹心板