機器
big
car
coal
construction
dirt
dirty
dump
dust
engine
engineering
equipment
excavation
fog
ground
heavy
high
huge
industrial
industry
large
loader
loading
machinery
metal
mine
mineral
mining
mover
moving
open
ore
pit
power
production
quarry
rock
russia
smoke
stone
sunrise
sunset
technology
transport
transportation
truck
vehicle
work
worker
yellow