虽然极光一般仅在两极附近可见，不过在强烈的磁暴对地球磁场的影响下，极光也会在赤道附近出现。

While aurora are generally only visible close to the poles, severe magnetic storms impacting the Earth’s magnetic field can shift them towards the equator.

youdao

虽然极光一般仅在两极附近可见，不过在强烈的磁暴对地球磁场的影响下，极光也会在赤道附近出现。

While aurora are generally only visible close to the poles, severe magnetic storms impacting the Earth's magnetic field can shift them towards the equator.

youdao

还有，由于世界时旋转的，因此在赤道稍微膨胀一点，所以在中间比在两极稍微长一点。

What's more, because the world spins, it bulges a bit at the equator, so it is a little bit longer around the middle than around the poles.

youdao