1. Walking is one of the basic human activities. It seems that the whole human body structure is designed for walking, which is recognized as the best exercise in the world.
2. Bicycles can be used as an environmentally friendly means of transportation and travel; More and more people use bicycles as fitness equipment for riding and cycling. Cycling itself is also a competitive sport, including road cycling, mountain cycling, track cycling and acrobatic cycling.
3. Motorcycle is a two-wheeled or three-wheeled vehicle driven by gasoline engine and controlled by handlebar. They are light, flexible and fast, and are widely used in patrol, passenger transport and freight transport. They are also used as sports equipment. Generally speaking, motorcycles are divided into street cars, road racing cars, cross-country motorcycles, cruise cars, station wagons and so on.
4. Public transportation is open to all modes of transportation that provide transportation services to the public. Usually, it is paid as a commercial service, but there are some free exceptions. Public transport system consists of physical elements, such as passages, vehicles and station facilities. Including civil aviation, railways, highways, water transport and other modes of transportation.
5. From the design and technical characteristics, passenger cars are mainly used to carry passengers and their carry-on luggage and/or temporary articles, including the driver's seat, with a maximum of 9 seats.
Passenger cars are divided into the following 1 1 models. It mainly includes: ordinary buses, open-top buses, senior buses, small buses, open-top, hatchback buses, station wagons, multi-purpose buses, short-headed buses, off-road buses and special buses.
Refer to the above? Baidu encyclopedia-walking
Refer to the above? Baidu encyclopedia-bicycles
Refer to the above? Baidu encyclopedia-public transportation
Refer to the above? Baidu encyclopedia-motorcycle
Refer to the above? Baidu encyclopedia-automobile