機器
activity
architecture
build
bulldozer
cement
concrete
construction
contractor
delivery
dirt
dirty
dust
earth
engineering
equipment
factory
gravel
heavy
industrial
industry
job
land
line
liquid
machinery
manufacturing
material
mixer
occupation
outdoors
pour
project
raw
resource
road
rock
sand
site
steel
stone
street
structure
technology
transport
transportation
truck
vehicle
work
worker