英文關鍵字
are
background
build
building
canalisation
communication
communications
construction
danger
destroyed
dig
dirt
dirty
drain
drainage
duct
dug
earth
earthmoving
earthwork
energy
engineering
environment
equipment
excavate
excavation
fitting
flushing
ground
industry
installed
laying
metal
moat
new
pipe
pipelaying
pipeline
pipes
pipework
plumbery
plumbing
repair
sewage
sewerage
soil
spare
strengthening
supply
technology
telecom
temporary
tube
urban
water
waterworks
wet
which
working