英文關鍵字
pedal
feet
heel
leg
walking
slide
step
shoes
male
elliptical
sole
cross
foot
cycle
rhythm
sneakers
turn
playing
sports
trainer
slip
fitness
sportsman
roll
floor
simulator
home
part
speed
push
insulation
place
human
work
jog
stair
action
practice
quarantine
equipment
routine
movement
driving
gymnastic
epidemic
detail
manage
exercising