英语词汇“penumbra”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	penumbra
释义	penumbrapenumbra /pəˈnʌmbrə/ noun [countable] Etymology ETYMOLOGYpenumbra Origin: 1600-1700 Modern Latin Latin paene almost + umbra shadow science, physics a slightly dark area between full darkness and full light
随便看	dept. depth depth charge deputation depute deputize deputy derail derailleur derailment deranged derangement derby deregulate deregulation derelict dereliction deride de rigueur derision derisive derisively derisorily derisory derivation

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