英文關鍵字
bad
blue
broken
burst
connect
construction
dilapidated
drip
drop
duct
engineering
environment
equipment
faucet
fix
flow
flowing
hose
industrial
industry
iron
joint
junction
leak
leakage
leaking
leaky
link
main
material
metal
old
pipe
pipeline
pipes
piping
plumber
plumbing
problem
repair
rubber
rust
rusty
seep
space
steel
symbol
system
tube
valve
waste
water