英文關鍵字
active
activity
adorable
athletic
attentive
background
ball
caucasian
cheerful
child
childhood
coach
court
cute
equipment
exercise
father
fun
game
girl
happiness
happy
healthy
inside
instructions
instructor
kid
leisure
lifestyle
little
male
man
outdoors
people
person
play
player
racket
racquet
smiling
speed
sport
teaching
tennis
trainer
training
two
white
young
youth