地球 自转 加快 一天 已 不足 24小时 ！地球 如何 形成 ？谁 推动 它 旋转 ？(3) Earth|rotation|has accelerated|day|already|less than|24 hours|Earth|how|formed|who|pushes|it|rotates The Earth's rotation has accelerated, and a day is now less than 24 hours! How did the Earth form? Who is pushing it to rotate? (3)

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