英文關鍵字
throw
ball
up
hands
fly
upward
arm
abdominal
activity
athlete
body
builder
caucasian
fitness
sitting
medical
exercise
man
cramps
stairs
green
gym
authentic
real
sports
rowing
slalom
3035s
abs
effort
endurance
gear
heavy
functional
indoors
position
muscle
physical
healthy
medicine
leg
old
pass