近年来，随着世界篮球运动的发展，篮球比赛日益快速激烈。技、战术日新月异，双方对抗愈来愈频繁。同时篮球规则的改革（例如：8秒违例，24秒违例，空中接力扣篮等）也增强了比赛的观赏性。运动员的速度、弹跳力量、技术的表现，仿佛使篮圈显得愈来愈低，球场愈来愈小。这就是 In recent years, with the development of the world basketball, the basketball game is increasingly fierce and intense. Technology and tactics change with each passing day, the two sides confront each other more and more frequently. At the same time the basketball rules reform (for example: 8 seconds offenses, 24 seconds violation, air relay dunk, etc.) also enhance the viewing of the game. Athletes speed, bouncing power, technical performance, it seems that the ring seems to be getting lower and lower, the pitch is getting smaller and smaller. This is