機器
action
activity
backhoe
bagger
bucket
construction
day
development
digger
dirt
dredge
dredger
dredging
eart
engineering
equipment
excavate
excavation
excavator
expansion
gear
gravel
heavy
hill
horizontal
hydraulic
industrial
industry
lifting
loader
loading
machinery
massive
mover
operator
outdoor
outside
road
scoop
site
spoon
stone
technology
tool
transportation
truck
working