尽管在外逗留的时间不长、也并不一定都会遇到不幸,但在旅行过程中常常有可能碰到一些危害。坐飞机旅行时应当考虑到机仓的减压、缺氧、时差适应障碍以及其它一些飞行不适症。乘车、 Although not long stay outside and not necessarily encounter the unfortunate, but often during travel may encounter some hazards. Traveling by plane should take into account the decompression of aircraft silos, hypoxia, maladjustment of flight delays and other conditions of flight. Ride,