英文關鍵字
water
dirty
brown
environment
river
flow
factory
liquid
industrial
plant
wet
manufacturing
natural
stream
rusty
industry
waste
concept
flowing
ecology
slowmotion
garbage
muddy
emission
motion
overflow
pollution
dirt
mud
rapid
typhoon
production
drop
flood
environmental
chemical
splatter
splashing
fluid
waterfall
sludge
warming
nobody
splash