乘飞机作长途飞行时(如洲际飞行),往往有这样的情形:飞完了今天之后,才飞向“昨天”。这种时间倒错的急剧改变,会搅乱人体生物节律的惯性运行;而且,由于晨昏颠倒,就会出现一些一时难于适应的症状,这就是时差反应现象。 When traveling by air for long flights (such as intercontinental flights), there is often such a situation that after the end of the flight, it will fly to “Yesterday.” This sharp reversal of time will disrupt the inertia of the biorhythm of the human body. Moreover, due to the twisting twilight, some temporary symptoms that are difficult to adapt to occur appear. This is the phenomenon of jet lag.