几年来
for the past several years
集中, 集中器, 疾走, 麂, 戟, 脊, 己, 虮, 掎, 挤, 几百, 脊椎, 指标, 几次, 几个小时, 几个, 几何学, 挤进, 济南, 几年, 几千, 挤入, 几十年, 几十亿, 几天, 几天来, 几样, 给予, 暨, 际, 稷, 冀, 剂, 济, 蓟, 觊, 荠, 鲫, 继, 霁,