名词
中文翻译：Unknown
同义词：
['acceleration timer', 'speedometer timer', 'speed-up timer']
例句：
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1. The car's speed timer is showing that it's going at a steady 60 miles per hour.
汽车的速度计时器显示它以每小时60英里的速度稳定行驶。
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2. The engineer used the speed timer to measure the engine's performance.
工程师使用速度计时器来测量发动机的性能。
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3. The driver had to use the speed timer to avoid hitting a pedestrian.
司机不得不使用速度计时器以避免撞到行人。