短語詞組短語Basin of Lancangjiang valley 河谷盆地valley basin 谷盆haizi valley basin 海子溝流域rift -valley basin 裂谷型盆地valley basin city 河谷盆地型城市river valley basin 河谷盆地rift valley basin 地塹盆地valley -basin city 河谷盆地型城市valley river basin 河流的干流和支流所流過的整個區(qū)域 返回 basin valley