... 感人的故事 A Story of Determination 永远感人的意思 Touching forever 感人的话语 Likes specially ...
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Iff something is moving, with nothing touching it, it will go on forever, coasting at a uniform speed in a straight line.
正在运动的某一物体，如果没有受到任何外力的出动，它将永远继续作匀速直线运动。
If something is moving, with nothing touching it, it will go on forever, coasting at a uniform speed in a straight line.
正在运动的某一物体，如果没有受到任何外力的出动，它将永远继续作匀速直线运动。
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