The moon disk blocks almost all the light from the sun.

月亮的圆盘几乎挡住了太阳的所有光线。

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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。

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A solar eclipse happens when the new moon passes in front of the sun, blocking out the view of the sun's disk.

当新月从正面经过太阳，挡住太阳圆盘的形状时，就产生日蚀。

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People in a much larger region of the world can anticipate seeing a partial solar eclipse, in which the moon blocks only a fraction of the sun's disk.

CNN: Africa awaits total eclipse of the sun

During his 32nd solar eclipse observation, the Harvard-trained astronomer is to study the elusive coronal ring, the outer atmosphere of the sun, which can only be seen when the moon blots out the solar disk.

CNN: Africa awaits total eclipse of the sun