英文關鍵字
action
active
activity
adult
athlete
athletic
ball
caucasian
competition
concentration
court
enjoyment
equipment
exercise
fun
game
green
health
healthy
hobby
individual
leisure
lifestyle
male
males
man
match
net
one
open
outdoor
outdoors
people
play
player
playful
racket
racquet
recreation
serve
set
sport
sportive
sportswear
spring
summer
tennis
tournament
training
young