短語詞組短語cost control of labor 人工費控制cost advantage of labor force 勞動力成本優(yōu)勢cost of clerical labor 文書的費用low cost of labor 勞動力便宜cost of handling labor 裝卸勞力費用Opportunity Cost of Labor 勞動力機會成本cost of lost labor 誤工費cost of labor force 勞動力成本cost of labor used 人工費 返回 cost of labor