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What are the principles of the eclipse
Article illustrationsThe eclipse is the shadow of the moon entering the earth and the darkening of the moon. The earth has a shadow in the direction of the sun, which is divided into two parts: a shadow and a shadow. The film is not exposed to direct light from the sun, and the half shadow receives some direct light from the sun. The moon sometimes enters the earth's shadow while orbiting the earth, and the eclipse occurs. The whole moon enters t

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