機器
activity
big
bulldozer
car
career
cargo
coal
construct
construction
dig
dirt
drive
dump
dumper
dumptruck
earth
equipment
excavation
excavator
ground
heavy
huge
industrial
industry
land
large
loader
loading
lorry
machinery
mine
miner
mover
opencast
power
quarry
road
rock
sand
site
sky
tipper
tractor
transport
transportation
truck
vehicle
work
yellow