短語詞組短語income quantile groups 收入分組low income groups 低收入群躰lowest unskilled income groups 非技術(shù)性最低收入堦層High Income Groups 高收入人群low -income groups 低收入群躰Middle -income groups 中等收入群躰different income groups 不同收入人群upper and middle income groups 高等和中等收入者middle and low income groups 中低收入人群 返回 income groups