機器
aged
area
boulders
brown
cliff
cloudy
day
development
dirt
drought
earth
engine
equipment
excavation
filter
geologic
gravel
heavy
industrial
industry
land
large
machinery
mine
mineral
mountain
mountainous
nobody
old
opencast
outdoors
quarry
resources
rocks
rubble
sheer
sky
stones
summer
technics
tractor
transport
uncovering
ural
vehicle
wheeled
working
yellow