marathon [ˈmærəθən]

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n.长距离赛跑；需要耐力的比赛；(M-)马拉松

a running race of slightly over 26 miles (42.195 kilometres )

I'm hoping to be in the marathon next year. 我希望明年能参加马拉松赛。
The meeting was a bit of a marathon. 这次会议有点马拉松赛的味道。