柯林斯词典speedometer /spɪˈdɒmɪtə/ (speedometers) 1. N-COUNT A speedometer is the instrument in a vehicle which shows how fast the vehicle is moving. (車輛的) 速度計 返回 speedometer剑桥词典a device in a vehicle that shows how fast the vehicle is moving （車輛的）速度計，裡程計 返回 speedometer