人骑自行车和开汽车一小时分别能跑多少公里？
长安旧梦里 Even closing your eyes while taking a high-speed train can help you move forward at a speed of 300 kilometers per hour.
长安旧梦里 
长安旧梦里 Even closing your eyes while taking a high-speed train can help you move forward at a speed of 300 kilometers per hour.