英文關鍵字
1080
1920x1080
autumn
changing
city
color
damage
danube
day
definition
dirty
edge
environment
environmental
evening
flowing
form
format
garbage
high
image
industrial
industry
life
lighting
mud
natural
nature
onto
people
pollution
pumped
real
river
riverbank
riverside
running
scene
sewage
sewer
sound
stream
substance
surface
time
toxic
unhygienic
urban
video
waste
water