sandhiadj.连接音变的n.连接音变sandn.沙；沙子；沙滩；黄灰色vt.撒沙；打磨；以沙掩盖Sanding Discs with Glue Backing圆盘背胶砂纸sandpaper the wooden surface.用沙纸擦这块木头的表面。sand-carrying capacity of lime石灰含砂量Sandro Nesta was there behind.桑德罗-内斯塔还在后面。Sand and stone processing system砂石料加工系统sand excavation in river courses河道采砂sand-burying Salix psammophila沙埋沙柳Sand-lined metal mould casting铁型覆砂铸造Sandu County of Guizhou Province贵州三都Sands lithify into sandstones.砂经过石化而成砂岩。