英文關鍵字
boulder
bubble
current
fast
flow
foreground
huge
motion
nature
pure
rapid
river
rock
rough
rushing
spring
stone
swirl
turbulence
water
whirlpool
英文關鍵字
boulder
bubble
current
fast
flow
foreground
huge
motion
nature
pure
rapid
river
rock
rough
rushing
spring
stone
swirl
turbulence
water
whirlpool