Focus on the pronunciation of treadmill
English definition of “treadmill”
/ˈtredˌmɪl/ n [C]
› a machine for exercising on which you run or walk on a strip that moves back, so that you must move at the same speed as the strip: She works out on a treadmill. › A treadmill is also a boring, regularly repeated activity or experience: My life has been a treadmill lately.