英文關鍵字
water
spring
stream
river
dirty
muddy
nature
snow
flow
fast
swift
wave
whirlpool
foam
rain
flood
earth
motion
environment
weather
ecology
climate
speed
rapid
brown
moving
splash
danger
overflow
season
disaster
landscape
outdoor
liquid
bubble
destruction
fluid
melt
ripple
spray
swirl
rushing
surface
beauty
day
slush
thaw