umbra
- n. [天] 本影，[天] 暗影；蚀时的地球
实用场景例句
- 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.
辞典例句
- 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.
期刊摘选
- 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.
辞典例句