英文關鍵字
water
leaking
aluminum
pipe
used
supply
agriculture
purposes
leakage
leak
burst
broken
problem
rusty
old
rust
maintenance
steel
metal
pressure
waterworks
iron
bolt
weather
plumbing
piping
works
split
hydrated
maintained
brown
repair
failure
bad
plumber
construction
valve
unsustainable
ineffective
fracture
irrigation
wet
technology
tube
engineering
condition
symbol
tired
damaged
hose