If the moon goes between the Earth and the sun, we have an eclipse of the sun.
如果月球在地球和太阳之间，那么我们就有(叫)日食。
An eclipse of the sun occurs when the moon passes directly between the sun and the earth, screening part or all of the sun's disk.
当月亮直接从太阳和地球之间经过，遮住太阳一部分或全部时，日食便发生了。
During an eclipse, the sun, Earth and moon line up, leaving a darkened moon visible to observers on the night side of the planet.
月全市发生时，太阳，地球和月球连成一线，地球夜晚一侧的观察者可以看到一个变暗了的月亮。
However, if an eclipse occurs while the Moon is on the far side of its elliptical orbit, it appears smaller than the Sun and can't completely cover it.
但是如果日食出现在月球处于它的椭圆轨道远地点的时候，它显得比太阳小而无法完全遮盖住太阳。
As the Moon blocked just the central portion of the Sun, people looking skyward would have seen a fiery ring around the Moon's perimeter, what is known as an annular eclipse.
当月亮正好阻挡住太阳中心的一部分，人们会看太阳像燃烧的圆环环绕在月球的周边，这就是日环食。
An annular eclipse occurs when the moon does not cover the entire disc of the sun so that a ring of light encircles the shadow of the moon.
当月亮不能完全遮住太阳时，月亮影子的周围就会有一圈亮光，日环食就发生了。
If the Earth goes between the moon and the sun, we have an eclipse of the moon.
如果地球在月球和太阳之间，我们就有(叫)月食。
Some changes happen only once in a while, like an eclipse of the moon. Others happen repeatedly, like the rising and setting of the sun.
某些变化只是偶尔发生一次，就像月食一样，其他变化则重复发生，如同日升日落一般。
The Sun, the Moon, and two photographers all lined up last month in Antarctica during an unusual total eclipse of the Sun.
在这个不寻常时刻，太阳，月亮，南极洲，以及两位摄影师都排列成队。
An annular eclipse of the sun covering over 500 kilometers will appear on January 15, Yangtze River Daily reported on Saturday.
长江日报上周六报道说，太阳遮没超过500公里的日环食将会在1月15日出现。
An annular eclipse of the sun covering over 500 kilometers will appear on January 15, Yangtze River Daily reported on Saturday.
长江日报上周六报道说，太阳遮没超过500公里的日环食将会在1月15日出现。
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