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一张纸竟能压住被砸的尺子？一人一个小实验PK，没有圆规也能画圆
一张纸竟能压住被砸的尺子？一人一个实验PK，没有圆规也能画圆
奇奇怪怪的“科学小实验”32/44
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App02:56一张纸竟能压住被砸的尺子？一人一个实验PK，没有圆规也能画圆
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