[singular]work or a way of life that is boring or makes you tired because it involves always doing the same things枯燥无味的工作(或生活方式)
I'd like to escape the office treadmill.我想摆脱办公室的枯燥工作。🔊🔊
[countable](especially in the past) a large wheel turned by the weight of people or animals walking on steps around its inside edge, and used to operate machines(尤指旧时由人或牲畜踩动踏板使之转动的)踏车