英文關鍵字
aquatic
bad
brown
canal
canaln
channel
clay
contaminated
crapped
danger
dirty
ditch
drainage
dreg
dung
ecological
effluent
environment
excrement
faeces
filthy
floating
flow
flowing
footage
foul
green
gutter
issue
lack
lees
marsh
moving
mud
muddy
nature
off
oozy
pollutant
pollution
pond
poor
problem
quality
raw
refuse
river
run
sediment
sewage
sewerage
side
silty
slimy
soiled
stank
stream
styrofoam
swamp
treatment
troubled
turd
unclean
untreated
very
waste
water