英文關鍵字
arrow
barell
barrel
black
business
chart
cost
crisis
crude
currency
diagram
diesel
down
drilling
drum
dump
energy
environment
exchange
fall
finance
fossil
freight
fuel
gallon
gas
gasoline
graph
illustration
industrial
industry
isolated
market
metal
money
oil
petrol
petroleum
pipeline
power
price
pump
red
rich
rise
rising
sky
storage
tank
wealth