汽车是最为常用的交通工具之一。当我们坐在行驶的汽车内观察车窗外地面上的物体时,常常会发现从车的侧面车窗观察到的物体的运动速度要比从前车窗观察同一个物体的运动速度要快,于是许多人都认为汽车的前挡风玻璃具有减速的作用,许多司机们在比较车的性能时也往往将车前挡风玻璃的减速效应列为重要的一项。 Cars are one of the most popular modes of transportation. When we sit in a moving car and observe the objects on the ground outside the car window, we often find that the moving speed of the objects observed from the side windows of the car is faster than that observed from the front window of the same object. Therefore, many People think that the front windshield of the car has a deceleration effect, and many drivers often compare the performance of the car with the deceleration effect of the front windshield as an important one.