名词
中文翻译：速度表
同义词：
['tachometer', 'odometer']
例句：
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1. The speedometer on the car reads 60 miles per hour.
汽车上的计速器显示每小时60英里。
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2. He used his speedometer to measure the distance between the two cities.
他利用计速器测量了两个城市之间的距离。
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3. The driver had to slow down and use his speedometer to avoid hitting a pedestrian.
司机不得不减速，并使用他的计速器以避免撞到行人。