機器
activity
big
bucket
build
building
bulldozer
coal
construction
contractor
dig
digger
dirt
dredger
dump
dumper
earth
engineering
equipment
excavate
excavation
excavator
gravel
ground
heavy
hydraulic
industrial
industry
land
large
load
loader
machinery
mine
mining
mover
power
quarry
red
road
scoop
shovel
soil
technology
tipper
tractor
transport
truck
vehicle
work