機器
advantage
barrel
black
business
chink
construction
crude
donkey
drill
drilling
ecology
economy
energy
equipment
extract
extracting
extraction
facility
fuel
gas
income
industrial
industry
jack
land
mineral
money
nodding
oil
oilfield
petroleum
pipe
pipeline
platform
power
pump
pumping
pumps
raw
rich
rig
rocking
russia
storage
support
technology
tool
unit
well
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