短语词组短語boulder r clay soil 泥礫土boulder -clay 泥礫boulder r clay 泥礫土Hessle boulder clay 赫塞爾泥礫red boulder clay 紅色泥礫boulder clay soil 泥礫土boulder clay soils 泥粒土壤glacial boulder clay 冰川粘土chaotic boulder clay 混襍漂礫粘土 返回 boulder clay