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

单词	ultramarathon
释义	ultramarathon /ul'treuh mar"euh thon', -theuhn/, n. any footrace of 50 or more miles. [1975-80; ULTRA- + MARATHON]
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