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10。 the problems are: 1) speed of light is constant; 2) time has direction; 3) the distance between origins of inertial systems can be veried。。"最近,一群来自印度各地的米其林经销商被带到中国 (哈尔滨) 测试一些米其林冬季轮胎。
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10。 the problems are: 1) speed of light is constant; 2) time has direction; 3) the distance between origins of inertial systems can be veried。。"最近,一群来自印度各地的米其林经销商被带到中国 (哈尔滨) 测试一些米其林冬季轮胎。