If I drive my car at say, 70 kilometres an hour and then stop accelerating, it takes longer for me to stop than it would if I was driving at 20 kilometres an hour.

• 如果我驾车以，比如说，每小时70公里的速度行驶，然后停止加速，那么汽车停下来要花的时间要比以每小时20公里的速度行驶时停下来花的时间更长。