marathon

/ˈmɛrəˌθɑn/

any long and arduous undertaking

中文释义：马拉松；持久的活动

Running a marathon requires months of rigorous training and mental endurance.

跑马拉松需要数月的严格训练和心理耐力。

The negotiation session turned into a marathon, lasting over twelve hours.

谈判会议变成了一场马拉松，持续了十二个多小时。