機器
autumn
bad
cellar
city
cityscape
construction
dig
digger
ditch
drain
drainage
duct
earth
earthwork
equipment
excavate
excavation
excavator
heap
hoe
hot
hydraulic
industrial
industry
insulation
large
outdoors
pipe
pipework
plumbing
problem
repair
repairs
replacement
road
roadwork
rust
safety
sewage
sewer
sewerage
shovel
site
street
submersible
trench
water
waterproofing
work