英文關鍵字
man
runs
treadmill
large
empty
gym
back
action
activity
adult
aerobic
athletic
boy
caucasian
class
club
endurance
equipment
european
exercise
fitness
foot
gymnasium
health
healthy
human
indoor
inside
jog
jogging
legs
leisure
lifestyle
male
motion
one
people
practice
runner
running
shoes
speed
sport
stamina
track
training
wellness
white
workout