英文關鍵字
activities
adolescent
ambitious
athletes
ball
beautiful
beginner
champion
championship
child
children
competition
competitive
competitor
concentrating
contestant
court
determined
focusing
game
girl
healthy
hitting
hobby
leisure
lifestyle
match
nice
outdoors
play
player
practicing
professional
racket
rivals
serious
serve
skillful
spirit
sports
sportsman
sportsmanship
technique
teen
teenager
tennis
tournament
training
young