機器
act
activity
asphalt
bucket
build
building
bulldozer
car
construction
dig
digging
dirt
ditch
earth
equipment
excavate
excavator
heavy
hole
hydraulic
industrial
industry
land
loading
machinery
manual
mover
occupation
outdoors
part
picking
power
road
roadwork
safety
sand
scoop
shovel
shoveling
site
stone
trench
up
vehicle
vertical
work
working