跑步機

treadmill / running machine

(of an animal) to paw (the ground)

to run / to run away / to escape / to run around (on errands etc) / (of a gas or liquid) to leak or evaporate / (verb complement) away / off

surname Bu

a step / a pace / walk / march / stages in a process / situation

to run / to jog / (military) to march at the double

(bound form) machine; mechanism / (bound form) aircraft / (bound form) an opportunity / (bound form) crucial point; pivot / (bound form) quick-witted; flexible / (bound form) organic