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when the sun or moon goes down, it moves below the horizon so you cannot see it any longer
astronomy a short period when all or part of the sun or moon becomes dark, because of the positions of the sun, moon, and earth in relation to each other. A total eclipse is when the sun or moon is completely covered. An eclipse of the sun is called a solar eclipse, and an eclipse of the moon is called a lunar eclipse.
in competitive cycling, the illegal use of motors on bikes in order to gain advantage over other ridersBuzzWord Article
be reversed; be as if it had never happenedadd a word
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