機器
architecture
big
blackhoe
block
build
building
concrete
construct
construction
contractor
dig
digger
dirt
dirty
engineering
environment
equipment
excavator
frame
ground
haul
heavy
hoe
hole
house
huge
industrial
industry
infrastructure
job
machinery
metal
modern
move
mover
pile
raise
road
site
structure
town
trackhoe
trench
under
urban
vehicle
wall
work
yellow