英文關鍵字
action
background
circle
circular
circulate
current
curve
deep
depth
downward
drain
environment
falling
flowing
fluid
force
funnel
hole
hollow
lake
liquid
movement
nature
outdoors
pure
reservoir
ripple
river
round
season
slowmo
snow
snowflakes
spin
spiral
stir
stream
swirl
turning
twirl
twist
vortex
water
wet
whirl
whirlpool
winter