名词中文翻译
中文翻译：速度标记
同义词：
['speed indicator', 'speedometer']
例句：
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1. The car's speed marker is flashing red to indicate the speed limit.
汽车的速度标记正在闪烁红色以指示限速。
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2. The driver used a speed marker to mark the spot where he had stopped.
司机使用了一个速度标记来标记他停车的地方。
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3. The policeman used his speed marker to keep an eye on the traffic flow.
警察使用他的速度标记来监视交通流量。