短語詞組短語necessary social labor time 社會必要勞動時間a necessary social labor time 社會必要勞動時間individual necessary labor 個人必要勞動necessary price of labor 勞動的必需價格social necessary labor 社會必要勞動public necessary labor 公共必要勞動socially necessary labor time 社會必要勞動時間necessary labor time 必要勞動時間socially necessary labor 社會必要勞動 返回 necessary labor