名词
中文翻译：Unknown
同义词：
['speedup', 'increase in speed']
例句：
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1. The car accelerated to 60 miles per hour on the straightaway.
汽车在直道上以每小时60英里的速度加速。
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2. The project's acceleration has been a cause for concern among investors.
该项目的加速进展让投资者感到担忧。
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3. The train accelerated as it approached the station.
火车接近车站时加速了。