英文關鍵字
active
activity
background
ball
blurred
challenge
clay
close
closeup
compete
competition
competitivesport
concept
court
entertainment
equipment
exercise
fitness
game
green
health
leisure
lifestyle
line
match
net
nobody
outdoor
play
professional
racket
recreation
round
rubber
sign
space
sphere
sport
surface
symbol
tennis
tennisball
tournament
tourney
training
white
yellow