考察过西藏的历史和文化的人不得不承认,西藏长期处于一个相对隔绝的地理环境,与中国其他部分的联系,特别是与中原地区联系较少。一般人都注意到了不利的交通条件,由于西藏与内地相隔遥远,加上地处世界屋脊,重重山脉阻隔,气候条件恶劣,人员和物资交流极其困难。却往往忽略了另一个同样重要的不利条件——高山反应。 People who have studied the history and culture of Tibet have to admit that Tibet has long been in a relatively isolated geography and has links with other parts of China, especially with the Central Plains. Most people have noticed unfavorable traffic conditions. Due to the remoteness of Tibet from the hinterland, the barrier to the mountains, the heavy mountain ranges, and the harsh climatic conditions, the exchange of people and goods is extremely difficult. But often overlooked another equally important adverse conditions - the mountain reaction.