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单词 umbra
释义

umbra

noun
/ˈʌmbrə/
/ˈʌmbrə/
(plural umbras, umbrae
/ˈʌmbriː/
/ˈʌmbriː/
)
(specialist)
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  1. the darkest part of a shadow
  2. the area on the earth or the moon that is the darkest during an eclipse compare penumbra
  3. Word Originlate 16th cent. (denoting a phantom or ghost): from Latin, literally ‘shade’.
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更新时间:2025/1/27 5:45:21