ADJ
马拉松式的;漫长而累人的;耗时费力的
If you use marathon to describe an event or task, you are emphasizing that it takes a long time and is very tiring.
例句
People make marathon journeys to buy glass here.
人们千里迢迢赶到这里购买玻璃。
...a marathon session of talks with government representatives.
与政府代表们马拉松式的会谈