名词
中文翻译：速度
同义词：
['rate', 'velocity']
例句：
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1. The car accelerated to60 miles per hour on thehighway.
汽车在高速公路上以每小时60英里的速度加速。
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2. The racers weretrying to reach the finish line as quicklyas possible.
赛车手们正试图尽可能快地到达终点线。
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3. Theproject was supposed to becompleted within six months, butit took longer than expected.
这个项目原计划在六个月内完成，但实际花费的时间比预期长。