id	keyword
fbem-22241	energy
fbem-22241	energy efficiency
fbem-22241	economy
fbem-22241	development
fbem-22241	household energy
fbem-22241	energy structure
fbem-22241	energy consumption
fbem-22241	china
fbem-22241	level
fbem-22241	coupling
fbem-22241	energy use
fbem-22241	degree
fbem-22241	economy development