An earthquake can make earth rotate faster by nudging some of its mass closer to the planet's axis, just as ice skaters can speed up their spins by pulling in their arms.
一次地震可以使地球旋转得更快，通过将地球的质量向它的轴线轻推，正如滑冰的人可以通过缩回他们的手臂来使旋转加速。
The earthquake that struck Chile on Saturday may have shifted the earth's axis and created shorter days, according to scientists at Nasa.
据美国宇航局科学家透露，周六发生在智利的强烈地震可能改变地球自转轴心线，并缩短地球自转时间，使一天时间变短。
Gross said that even though the Chilean earthquake is much smaller than the Sumatran quake, it is predicted to have changed the position of the figure axis by a bit more for two reasons.
Gross表示，尽管智利地震远小于苏门答腊地震，但是估计结果是前者对形状轴的影响却大一点，有两个原因。
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