英文關鍵字
adolescent
athletic
blue
boy
caucasian
champion
cheer
encourage
encouragement
equipment
extreme
family
fan
five
fun
greeting
health
helmet
high
hobby
kid
kneecaps
leisure
mom
mother
outdoor
park
people
practice
protection
proud
ramp
recreation
roller
rollerblader
rollerblading
rolling
skating
son
sports
summer
support
training
yellow