umbones的英语例句
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This is a lighter area between the umbra and the edge of a shadow.
这是本影和阴影边缘之间较亮的区域.
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Only moon umbra totally puts on earth, the shadow area can watch the eclipse.
唯有在月球的本影投影在地球表面时, 在该区域的人才能够观测到日食.
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This includes the continuous survey of umbra and penumbra of the sunspot.
这包括对太阳黑子本影和半影持续的观测.
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