英语词汇ultramarathon怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	ultramarathon
释义	ul·tra·mar·a·thon AHD[ŭl'trə-mărʹə-thŏn'] D.J.[ˌʌltrəˈmærəˌθɒn]K.K.[ˌʌltrəˈmærəˌθɑn]n.Sports（名词）【体育运动】 A cross-country footrace with distances of 30 miles (48 kilometers) or more.超长马拉松：距离在30英里(48公里）以上的越野赛跑 Related Forms继承用法ul'tramarʹathon'er n.（名词）
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