短語詞組短語glacial boulder valley debris 冰川谷巖屑glacial boulder valley 冰蝕谷glacial carved valley 冰蝕谷glacial hanging valley 冰蝕懸谷;冰成懸谷glacial valley floor step 冰谷階hanging glacial valley 懸冰川谷glacial boulder carved valley 冰蝕谷glacial boulder hanging valley 冰蝕懸谷glacial valley lake 冰蝕谷湖;冰谷湖 返回 glacial valley