Treadmill

['tredmɪl] or ['trɛdmɪl]

解释:

(noun.) a job involving drudgery and confinement.

(noun.) a mill that is powered by men or animals walking on a circular belt or climbing steps.

(noun.) an exercise device consisting of an endless belt on which a person can walk or jog without changing place.

埃尔希编辑--From WordNet

解释:

(n.) A mill worked by persons treading upon steps on the periphery of a wide wheel having a horizontal axis. It is used principally as a means of prison discipline. Also, a mill worked by horses, dogs, etc., treading an endless belt.

弗洛整理