Interpretation of aviation: in a narrow sense, it refers to the navigation activities of manned or unmanned aerial vehicles in the atmosphere. Broadly speaking, the term aviation also refers to the science necessary for aviation activities, and also refers to various technologies involved in aircraft research and development. Aviation refers to the navigation activities of manned or unmanned aircraft in the earth's atmosphere, such as flight. These activities also include sky-related organizations, such as aircraft manufacturing, development and design.
2. Explanation of air tickets: Air tickets, also known as air tickets [1], are transportation tickets needed when flying. International air tickets are sold in real-name registration system. The standard format of this kind of ticket is uniform all over the world. But there are many kinds, the common ones are 20 cm long and 8.3 cm wide. Both paper tickets and electronic tickets use the same language all over the world, all in English. However, because there are many codes and terms on the ticket, people who get the ticket for the first time often need guidance to understand the content of the ticket.