treadmill
Word family nountreadertreadingtreadletreadlertreadlingtreadmilltreadwheelverbtread
Power
tread·mill /ˈtredˌmɪl/ noun 1. 
[countableC] a piece of exercise equipment that has a large belt around a set of wheels, that you can walk or run on while staying in the same place 跑步机 →4 See picture on 见图 Page A10 Sports centre 体育运动中心 →5 see picture at 见图 gym
[countableC] a piece of exercise equipment that has a large belt around a set of wheels, that you can walk or run on while staying in the same place 跑步机 →4 See picture on 见图 Page A10 Sports centre 体育运动中心 →5 see picture at 见图 gym2 [singular]BORING work or a way of life that seems very boring because you always have to do the same things 单调而枯燥的工作[生活]
the treadmill of working in the office
单调枯燥的办公室工作
3. [countableC]TP a mill worked in the past by prisoners treading on steps fixed to a very large wheel 〔过去由犯人踩动踏板使大轮转动的〕踏车磨粉机
Examples from the Corpus
treadmill• Join a gym or buy a treadmill?• Each peahen is on a treadmill and dare not jump off lest she condemn her sons to celibacy.• It has been described as bare-knuckle fighting without a ring and like setting toy mice on a treadmill.• Here was a treadmill on which trainees got launched, often too quickly.• Width often leads to superficiality and depth may produce a blinkered approach and an intellectual treadmill.• An intensely private man, one can only assume the attractions of the year-round treadmill are wearing thin.• And ask any worker about the treadmill, the maddening tedium.• He ran two miles on the treadmill.