英文關鍵字
bad
black
blue
broken
burst
cement
concrete
construction
drip
drop
environment
equipment
faucet
flow
flowing
hose
leak
leakage
leaking
leaks
lose
metal
meter
money
pipe
pipes
plumber
plumbing
problem
repair
rubber
rusty
site
steel
structure
symbol
tap
tool
tube
underground
valve
waste
water
work
worn