英文關鍵字
activity
alley
arm
asphalt
back
behind
blue
boy
car
caucasian
child
childhood
city
culture
elbowpad
equipment
expression
fast
forest
hold
keeper
kid
kneepad
leisure
life
motion
move
nature
one
outdoor
park
path
paving
people
person
playful
portrait
rc
roller
rollerskate
speed
sport
summer
sunny
teen
teenager
toy
trees
walkway
young