怎么判断长龙或单跳

简介：There is a bit of distance between the Central South Campus and the Railway College. It is enough for Su Can to walk for a long time. There are many pedestrians and vehicles on the road. Central South is originally a school in the city. It is either a commercial center or a population gathering place. It has good transportation and is surrounded by many satellites. The school is arched and has a rich cultural atmosphere. ≈