时下,随着经济的发展以及人们 物质生活水平的提高,商务活动日益频繁,外出旅游亦日趋流行,尤其是忙于公务经常出差的人士,乘坐不同交通工具的机会越来 Nowadays, with the development of economy and improvement of material living standards, business activities have become increasingly frequent and travel abroad has become more and more popular. In particular, people who are busy with business trips frequently travel more and more by different means of transport