| 释义 |
Driving speeds
基本例句
车速
His driving speed is about 80 miles per hour.他的行车速度大约是每小时80英里。
The driver reduced the driving speed.司机减低了车速。
A gearing mechanism of a motor vehicle engine that reduces the power output required to maintain driving speed in a specific range by lowering the gear ratio.超速档机动车辆的一种齿轮装置，通过降低齿轮比率来减少为将车速保持在一定范围内而需要的输出力 |