500cc摩托车是多大排量

简介：Altitude sickness is the most common symptom in Tibetan areas. In severe cases, like Cheng Keshu, who has a gastrointestinal nausea reaction, altitude sickness cannot be treated, but can only be relieved. No matter how powerful drugs are, it cannot treat altitude sickness, but can only relieve symptoms. However, altitude sickness An is a reliever that works immediately. u