Some people develop altitude sickness when climbing high mountains.
有些人在爬高山时会发生高山反应。
According to our experience Altitude sickness is very serious case in high elevation.
根据我们的经验，高原反应是非常严重的情况下在高海拔。
According to our experience Altitude sickness is very serious case in high elevation.
根据我们的经验，高原反应是非常严重的情况下在高海拔。
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