英文關鍵字
minerals
oil
rig
worker
barrel
ecology
metal
gasoline
extraction
sunset
unit
connection
floor
mud
pull
safety
machinery
exploration
work
plant
pump
up
torque
mining
job
industry
business
drill
derrick
production
industrial
energy
petroleum
driller
steel
rotary
tool
oilfield
gas
fuel
machine
pipe
well
drilling
equipment
power
platform
technology