英文關鍵字
blue
bubbles
bubbly
circle
contaminated
current
danger
dangerous
dark
evening
fast
flood
flooding
flowing
foam
foaming
foamy
forming
froth
frothing
gross
lake
late
lots
nasty
night
polluted
pollution
pond
rapids
river
scary
scum
scummy
stream
strong
surface
swirl
swirling
swirls
thick
water
waterfall