短语词组短语river diggings 河流砂矿开采modern diggings 现代化矿区Yangshui diggings 洋水矿区Diggings soil 矿区土壤placer diggings 砂矿采掘gold diggings 金矿区Jokanur Diggings 卓坎诺挖掘点Shashuya diggings 杉树垭矿区digging machine 挖土机，采掘机 返回 diggings