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MP3

noun
🔊/ˌem piː ˈθriː/
🔊/ˌem piː ˈθriː/
 [uncountable, countable]
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  1. a method of reducing the size of a computer file containing sound; a file that is reduced in size in this wayMP3 技术（指 MPEG 第三层声音压缩技术）；MP3 文件Topics Musica2
    Word Origin1990s: from MPEG + Audio Layer-3.