短语词组短语sand stone soil 砂岩土壤sand layer soil 夹砂层土体构型sand desert soil 砂质漠壤土;砂质漠境土saturated sand and soil 饱和砂土sand and soil liquefaction 砂土液化Sand beach soil 沙滩地sand loam soil 砂壤土sand and soil base 砂土地基sand pebble soil 砂卵石土 返回 sand soil