英文關鍵字
amplitude
autumn
average
carousel
childrens
clockwise
counterclockwise
empty
foliage
full
loneliness
motion
movement
moves
nature
park
playground
red
rest
sound
speed
traffic
yellow
英文關鍵字
amplitude
autumn
average
carousel
childrens
clockwise
counterclockwise
empty
foliage
full
loneliness
motion
movement
moves
nature
park
playground
red
rest
sound
speed
traffic
yellow