英文關鍵字
gas
blue
burner
stove
crisis
dark
concept
energy
kitchen
resources
natural
butane
home
heat
fuel
flame
fire
power
oven
methane
industry
cook
prepare
appliance
russia
abstract
burn
tongues
contrast
fossil
budget
deficit
flammable
hot
problem
background
domestic
business
propane
control
warmth
circular
cooking
danger
finance
conceptual
circle
combustion