短語詞組短語Lower Second Class 二等二級;二等二Lower social class 工人階級lower -class 平民階層the lower -class 下層民眾lower r class limit 組下限lower middle class 中產(chǎn)階級;中下階級;中產(chǎn)階級的下層;階層lower working class 下層工人階級lower age class 低齡級 返回 lower class