機器
activity
big
bulldozer
construction site
conveyor
dig
digging
earth
earthmover
equipment
excavate
excavation
front loader
geology
heavy
hydraulic
industrial
industry
load
loader
machinery
material
metal
mineral
mining
mover
moving
opencast
operation
outdoor
production
quarry
quarrying
sand
shoveling
sky
stone
technology
tractor
transport
transportation
vehicle
wheel
wheel loader
wheeled
work
working
yellow