基本解释[地球科學]多邊形土壤词组短语短語polygonal fissure soil 多角形裂縫土polygonal soil crack 多角龜裂polygonal -structured soil 多角形結搆土polygonal fi ure soil 多角形裂縫土stone polygonal soil structure 礫質多角型搆造土polygonal soil更多词组专业释义地球科學多邊形土壤