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早上居然发现轮胎瘪了，打电话给中学物理老师后才明白 (水城百事)

by 原来是热胀冷缩, Tuesday, September 17, 2013, 08:55

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877 views

天气确实冷的很快

by 3D, Tuesday, September 17, 2013, 09:18 @ 原来是热胀冷缩

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1215 views

by 蒸馒头的原理, Tuesday, September 17, 2013, 09:19 @ 原来是热胀冷缩

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832 views

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