機器
bore
construction
design
diamond
digger
dried
drill
driller
drilling
dust
earth
engineering
environmental
equipment
excavation
excavator
exploration
heavy
hole
industrial
industry
iron
large
machinery
metal
mine
mover
mud
nature
perforate
power
professional
puddle
quarry
rig
road
rock
site
sky
soil
steel
stone
technology
toil
tool
vehicle
work
yellow