英文關鍵字
algae
aquatic
background
biology
detail
dirt
dirty
ecology
environment
environmental
fauna
fish
fishes
flora
flow
flowing
nature
organism
outdoors
plant
polluted
pollution
river
summer
surface
texture
underwater
water
wet
英文關鍵字
algae
aquatic
background
biology
detail
dirt
dirty
ecology
environment
environmental
fauna
fish
fishes
flora
flow
flowing
nature
organism
outdoors
plant
polluted
pollution
river
summer
surface
texture
underwater
water
wet