基本解释沙砾质土英汉例句双语例句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。gritty soil更多例句专业释义地球科学砂砾质土