英文關鍵字
pipe
water
supply
steam
drainage
repair
plumber
problem
pump
service
maintenance
tube
waterway
line
duct
canal
fog
damage
construction
industrial
foggy
wet
stream
cloud
renovate
plumbing
fume
exhaust
leaking
hardware
haze
system
valve
evaporation
mist
outdoor
industry
pipeline
polluted
pollution
pour
gas
smog
smoke
joint
vapor
tubing
connection
conduit