英文關鍵字
abstract
abstraction
air
atmosphere
away
background
beautiful
blue
bright
brightly
clean
clear
clouds
cloudscape
cloudy
colours
copyspace
cumulus
day
depth
fast
fluffy
fly
flyby
flying
freedom
fresh
good
ground
grouped
heaven
horizon
lapse
loop
motion
move
moved
moving
real
rolling
scape
sky
slow
soft
space
summer
time
white
wind
wispy