地球独特而巨大的卫星——月球，在稳定地球旋转轴的倾角方面发挥了关键作用。
Earth's unique and massive satellite, the Moon, plays a crucial role in stabilizing the obliquity of Earth's rotational axis.
最后，月球作为地球独特而巨大的卫星，在稳定地球旋转轴的倾角方面发挥了关键作用。
Finally, Earth's unique and massive satellite, the Moon, plays a crucial role in stabilizing the obliquity of Earth's rotational axis.
由于质量朝地球旋转轴靠拢，这就导致地球旋转速度加快- - -就像一个速度滑冰选手，当她把胳膊向身体收拢时就会旋转得更快。
Since that pulls mass closer to the planet's spin axis, it causes the planet to rotate faster - just as an ice skater spins faster when she pulls her arms towards her body.
要知道软件升级到可以预测撞击的确切经纬度绝非易事，因为切斯利每次都要将地球自传，方向及旋转轴等因素考虑在内。
Upgrading it to give the exact latitude and longitude of the collision wasn’t simple work, since Chesley had to factor in the spin, orientation and rotational wobble of the Earth at each moment.
这两个行星都有大致相同的地表面积，都有极冠，都有类似的倾斜旋转轴，使得火星和地球都有很强的季节性变化。
Both planets have roughly the same amount of land surface area, sustained polar caps, and both have a similar tilt in their rotational axes, affording each of them strong seasonal variability.
离两极更近意味着离旋转轴更近——像一个溜冰者把手臂往回缩，这样加速了地球的旋转。
Closer to the poles means closer to the axis of rotation — like a skater drawing her arms in, this has increased our Earth's rotation.
离两极更近意味着离旋转轴更近——像一个溜冰者把手臂往回缩，这样加速了地球的旋转。
Closer to the poles means closer to the axis of rotation — like a skater drawing her arms in, this has increased our Earth's rotation.
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