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在高楼建设以及其它高空作业时，有的人只要站在高处往下看，就会产生一种恐惧心理，担心摔下去会送命，因而越担心就越恐慌，冷汗直冒，两腿酸软打颤；而另外一些人只要登高或高空作业一段时间后，就会出现眩晕，面色苍白，站立不稳，天族地转等症状。其实，这就是曼高的现象
When building high-rise buildings and other high-altitude work, some people just look up from a height, they will have a kind of fear and fearing that they will be killed when they fall off, and the more they panic and the more their fears are scared. ; While others as long as ascending or working at high altitude for a period of time, there will be dizziness, pale, standing instability, and other symptoms. In fact, this is the phenomenon of Man Gao