機器
barrel
black
business
concept
construction
crude
drill
drilling
ecology
economy
energy
environment
equipment
exploration
extract
extraction
facility
fuel
gas
gasoline
high
income
industry
jack
mineral
mining
money
natural
nodding
oil
oilfield
petroleum
pipe
pipeline
platform
pollution
power
pump
resource
rig
rocking
scene
sky
steel
support
technology
tool
wealth
work