英文關鍵字
bathroom
bright
build
building
canalization
closeup
clothing
connection
construction
contractor
dirt
dirty
drain
drainage
drainer
drainpipe
exterior
fit
fix
flow
garden
gully
hard
hole
home
house
household
housing
industrial
industry
installing
job
occupation
outflow
outside
part
pipe
pipeline
piping
plastic
plumber
plumbing
profession
professional
pvc
repair
sanitary
sanitation
sewage
sewer
sewerage
system
technician
tube
utility
wall
waste
water
waterpipe
waterproof
wet
work
worker
working