说明：  使用c++开发实现了一个路口红绿灯的模拟，利用图形界面模拟了红绿灯的变化和车辆移动，且会根据车辆时动态调整时间。
(The simulation of traffic lights at an intersection is realized by using c++. The change of traffic lights and the movement of vehicles are simulated by using graphical interface, and the time is adjusted dynamically according to the time of vehicles.)