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natural levee
desert. 天然堤岸
eng.geol. 自然堤防
hydroel.st. 天然堤
soil. 天然冲积堤
tech. 自然堤; 冲积堤; 滨河床砂坝; 天然堤防
natural levee
: 4 phrases in 2 subjects
Oil / petroleum1
Technology3