随着地球、月球和太阳相对位置的逐渐变化，每年所发生的日食次数也不尽相同，有时候在一年之内会发生多达五次的日食。
Solar eclipses can happen up to five times a year, although each year is different due to variations in the positions of Earth, the moon, and the sun over time.
在一次月蚀中，地球将从太阳和月球之间经过。
In a lunar eclipse, Earth passes between the sun and the moon.
日食时当月球移动到地球和太阳之间时发生的。
A solar eclipse happens when the moon swings between the Earth and the sun.
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