英文關鍵字
adventure
age
artist
balance
boy
caucasian
child
children
color
concentration
courage
danger
day
elementary
energy
enjoyment
ethnicity
exercising
exploration
exterior
fun
games
male
medium
only
outdoors
park
person
play
playful
playground
playing
plays
rope
schoolyard
shot
spring
swing
tightrope
trapeze
wood