According to the principles of aerodynamics, in a moving vehicle, in the air at the top of the roof will form a negative pressure inside the vehicle, the car will be out of the polluted air.

• 根据空气动力学原理，汽车在行驶过程中，在天窗顶部的气流会对车内形成负压，将车内污浊的空气抽出。