英文關鍵字
america
azerbaijan
baku
barrels
business
conservative
crude
diesel
donkey
drilling
energy
equipment
exploration
explore
extract
extraction
field
flare
fossil
gasoline
industrial
industry
jack
machinery
nature
nobody
nodding
oil
oilwell
old
onshore
petrol
petroleum
pipeline
production
pump
pumpjack
resource
silhouette
sky
sun
sunbeam
supply
technology
texas
tower
unit
well