名词
中文翻译：距离
同义词：
['interval', 'gap', 'interval between', 'space']
例句：
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1. The traintravels at a constant speed of 200 kilometers per hour.
火车以恒定的速度每小时行驶200公里。
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2.The distance between the two cities is about 300 kilometers.
两座城市之间的距离大约是300公里。
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3.The distance between the two points is 500 meters.
两点之间的距离是500米。