rural old农村高龄老人ruraladj.农村的，乡村的，田园的rural human capital team农村人力资本团队rural distribution calbe农村电话配线电缆rural village fair trade农村集市贸易rural labor transferring农村劳动力转移rural vocational schools农职校rural residential houses农村民居Rural Construction Cadre乡村建设干部Rural domestic pollution农村生活污染rural old-age security农村养老保障rural-urban income gap城乡收入差距