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	convergent evolution converging lens conversant conversation conversational conversationalist conversationally conversation piece converse conversely converse relation conversion conversion factor convert converter convertibility convertible convertor convex convexity convexly convey conveyance conveyor conveyor belt

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