英文關鍵字
barrel
black
business
cash
chemical
concept
construction
container
crude
currency
diesel
dollar
drilling
ecology
economy
energy
environment
equipment
extraction
finance
fossil
fuel
gallon
gas
gasoline
greed
income
industrial
industry
machine
market
mineral
money
oil
petrol
petroleum
platform
power
price
production
profit
rig
rocking
ship
sky
storage
tank
technology
unit
wealth