機器
black
business
busy
coal
construction
coveralls
diesel
dig
digger
employee
engineer
environment
equipment
excavator
extract
geology
hard
headphones
helmet
hoses
indian
industry
labor
light
machinery
man
manage
manufacture
metro
mine
miner
natural
noise
people
perform
power
professional
quarry
rails
repair
safety
smile
tool
tunnel
underground
uniform
work
worker
定額
young coal miner is underground in a mine for coal mining in overalls against the backdrop of mining equipment. concept of repair of industrial equipment.の素材 [FY31083261478]
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