lunisolar nutation

例句：

1. 1. The moon is the only object in the sky that can be seen during a solar eclipse.
   月亮是天空中唯一可以在日食期间看到的物体。
2. 2.During a lunar eclipse, the moon appears as a bright disk in the sky.
   在月食期间，月亮看起来像天空中的明亮圆盘。
3. 3. Astronomy enthusiasts often observe these celestial events to learn more about our planet's movements.
   天文学爱好者经常观察这些天文事件，以了解更多关于我们星球的运动。