英文關鍵字
pedal
feet
barefoot
heel
leg
walking
step
male
elliptical
cross
foot
cycle
rhythm
turn
playing
sports
trainer
fitness
simulator
home
speed
push
sportsman
quarantine
epidemic
movement
limb
adjustable
manage
exercising
force
leather
motor
workout
cardiovascular
jog
weight
health
people
strong
strength
touch
athlete
toe
gymnastic
energy
sole
place