单词	black swan
释义	black swanˌblack ˈswan (also ˌblack ˈswan eˌvent) noun [countable] an event that no one expects and that has a very great effect
随便看	mechanical mechanical engineer mechanical engineering mechanically mechanical pencil mechanism mechanistic mechanistically mechanization mechanize mechanized M Econ MEd Med med medal medallion medallist Medal of Honor Medawar, Sir Peter meddle meddler meddlesome meddling Medea

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