英文關鍵字
air
alternative
background
blow
blue
breeze
bright
cloud
color
colorful
colour
detail
efficiency
energy
fun
game
garden
green
mill
natural
nature
object
pin
pink
pinwheel
plastic
play
purple
rainbow
red
renewable
rotate
rotating
rotation
saving
sky
spinner
spinning
spiral
summer
toy
turbine
twirl
ventilator
vibrant
wheel
white
wind
windmill
yellow