機器
backhoe
big
black
blue
bucket
cloud
cloudscape
cloudy
coal
construction
digger
digging
dirty
driving
earth
equipment
excavator
geology
goods
heavy
industrial
industry
lifting
machinery
materials
minerals
mining
mobile
mountains
mover
mud
operations
orange
outdoor
plants
power
raw
resources
scoop
shovel
sky
three
transportation
vegetation
wheels
woods
work
working
yellow