If you add sand granules to it, it can cut through just about anything.
如果你给它加入砂粒，差不多可以穿透任何东西。
Quicksand consists of a buoyant blend of round granules of light sand, blended with water, or of light soil and gritty mud, or of mud peppered with pebbles.
流沙是由轻沙的圆形小颗粒与水，或轻质土壤及砂砾或掺杂有鹅卵石的烂泥混合而成。
Minute rough granules, as of sand or stone.
砂，砂砾，砂粒细小的粗颗粒，如砂和石头粒。
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