短語詞組短語sand stratum and gravel bed 砂礫石層sand and gravel strata 砂卵石地層sand and gravel culture 砂田栽培sand and gravel drilling 砂礫石層鉆探waterin sand and gravel 巖土中的水sand and gravel overlay [地質]砂礫覆蓋層assorted sand and gravel 篩選的砂和礫石waste sand and gravel 廢砂石sand and gravel size 砂石粒徑 返回 sand and gravel