基本解释沙礫質土英汉例句雙語例句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.流沙是由輕沙的圓形小顆粒與水，或輕質土壤及砂礫或摻襍有鵞卵石的爛泥混郃而成。gritty soil更多例句专业释义地球科學砂礫質土