英文關鍵字
action
blue
business
clouds
cloudscape
coveralls
drill
drilling
energy
engineer
equipment
extraction
field
fossil
fuel
gas
hardhat
helmet
industrial
industry
jack
job
labor
machine
machinery
man
metal
mining
occupation
occupational
offshore
oil
outdoors
petrochemical
petroleum
production
professional
raw
red
resource
rig
safety
sky
technician
technology
work
worker