Sandru桑德鲁sandn.沙；沙子；沙滩；黄灰色vt.撒沙；打磨；以沙掩盖sand solidification agent固沙剂Sand fixing afforestation固沙植物sand density distribution型砂密度分布sandliving crazyweed herb沙棘豆sand production formation出砂地层sand-mudstone formation砂泥岩地层sand seismic liquefaction砂土地震液化Sand castles on the beach在海滩上建沙子城堡Sand Flies and Moth Flies毛蠓和蛾蠓(双翅目,蛾蠓科)Sand shakes off easily.沙子很容易抖掉。