[ 复数 umbras或umbrae ]
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以上来源于: WordNet
N a region of complete shadow resulting from the total obstruction of light by an opaque object, esp the shadow cast by the moon onto the earth during a solar eclipse 本影
The center of the umbra is much darker than its edges, " it says.
阴影的中心要比边缘暗得多,”杂志上说。
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Deep Umbra: the aspects of the Umbra far beyond Earth, in deep space.
深影界:影界远离物质界的一面,位于深层空间。
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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