A rocky stream is no barrier in this remote tribal region of southwestern Punjab, where the people are as rugged as the land.
多石的溪流并不是旁遮普西南部偏远部落区的屏障，那里的人们如这片土地一样强健。
2
The riparian zone is a functional transition region, the last protection barrier of lakes, which is connected the lake aquatic ecosystem and the terrestrial ecosystem.
湖滨带是连接湖泊水域生态系统与陆地生态系统的一个功能过渡区，是湖泊的最后一道保护屏障。
3
While for Russia, Transcaucasia is the traditional sphere of influence and strategic interests at stake region, which is the natural barrier to keep security and stability.