英文關鍵字
abstract
air
alga
algae
background
brown
bubble
bulgaria
celled
clean
clear
ecology
europe
flora
flow
flowering
flowing
footage
grass
green
grey
landscape
move
nature
oxidation
oxygen
plant
plants
pollution
purification
red
riparian
river
sea
seaweed
self
shake
shooting
shot
single
stream
surrealism
surrealistic
sway
swaying
under
underwater
vegetation
vibrates
view
water
waves
wet
wildlife