短語詞組短語Basin of Lancangjiang valley 河穀盆地valley basin 穀盆haizi valley basin 海子溝流域rift -valley basin 裂穀型盆地valley basin city 河穀盆地型城市river valley basin 河穀盆地rift valley basin 地塹盆地valley -basin city 河穀盆地型城市valley river basin 河流的乾流和支流所流過的整個區(qū)域 返回 basin valley