英文關鍵字
america
azerbaijan
baku
barrels
black
business
conservative
construction
crude
derrick
donkey
drilling
energy
equipment
exploration
explore
extract
extraction
field
fuel
gasoline
industrial
industry
jack
machine
machinery
money
nature
nobody
nodding
oil
oilwell
old
onshore
output
petrol
petroleum
pipeline
pump
pumpjack
resource
silhouette
sky
sunny
sunset
supply
texas
unit
well