英文關鍵字
2021
area
august
backyard
bad
bahia
basic
brazil
brazilian
building
canalization
chicken
city
cityscape
construction
contaminated
contamination
dirt
dirty
drainage
draining
duct
environment
feces
gallery
gray
groundwater
liquid
municipal
open
openair
pipe
pipeline
plumbing
polluted
pollution
purity
recycling
reservoir
river
rotten
rural
salvador
sanitary
sanitation
seen
sewage
sewer
sewerage
sludge
smell
station
stool
system
toxic
transmission
treatment
wastewater
water