Surrounded by mountains

环山───be surrounded by mountains;四周───all around

Mountain - Deep Basin is thought not to be necessarily the basin wholely surrounded by high mountains. it can be the basin within one mountain or at the two sides of a mountain.───认为“高山深盆”并非一定是四周环山的深盆，可以是某一高山与其间深盆或两侧盆地的有机组合。

Experts estimate that by 2042, the more famous mountains will be surrounded by weeds, Sha Fengjing.───专家估计，到2042年，这座名山更将被杂草包围，大杀风景。