- 释义：
- n. 半影；边缘；外围
- 例句：
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The First Amendment has a penumbra where privacy is protected from governmental intrusion.
第一修正案在个人隐私不受政府侵犯方面较为模糊.
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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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A penumbra of doubt surrounds the incident.
疑惑的阴影笼罩着该事件((真相不明)).
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