英文關鍵字
aerobic
air
balance
body
capacity
coordination
double
equipment
exercise
fat
fatty
fitness
function
game
grip
handle
improve
limbs
man
mobility
object
outdoor
park
pedals
recreation
set
steel
unit
walk
walker
英文關鍵字
aerobic
air
balance
body
capacity
coordination
double
equipment
exercise
fat
fatty
fitness
function
game
grip
handle
improve
limbs
man
mobility
object
outdoor
park
pedals
recreation
set
steel
unit
walk
walker