id	keyword
fbem-20443	carbon
fbem-20443	carbon emissions
fbem-20443	beijing
fbem-20443	hebei
fbem-20443	tianjin
fbem-20443	region
fbem-20443	hebei region
fbem-20443	energy
fbem-20443	peak
fbem-20443	ggdp
fbem-20443	development
fbem-20443	effect
fbem-20443	reduction
fbem-20443	trend