给我一根杠杆,我就能翘动地球吗?
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![给我一根杠杆,我就能翘动地球吗?](/uploads/image/z/8357667-51-7.jpg?t=%E7%BB%99%E6%88%91%E4%B8%80%E6%A0%B9%E6%9D%A0%E6%9D%86%2C%E6%88%91%E5%B0%B1%E8%83%BD%E7%BF%98%E5%8A%A8%E5%9C%B0%E7%90%83%E5%90%97%3F)
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