機器
big
bucket
bucket lift up
build
bulldozer
business
canalize
construction
construction site
contractor
demolition
devastation
development
digger
digging
dirt work
duty
engineering
equipment
excavate
excavating
excavation
excavator
excavator loader
grade
ground
hard work
heavy
heavy industry
hydraulic
hydraulics
industrial
industry
infrastructure
job
loader
machinery
outdoor
power
shovel
site
skull
sky
soil
track
tractor
truck
vehicle
work
yellow
yellow excavator