短語詞組短語additional l cost 追加成本Additional Premium Cost 保費附加成本modest additional cost 適度的額外成本additional cost item 附加成本項目Must bear additional cost 必須負擔額外的費用At No Additional Cost 竝且沒有增加成本absorb additional cost to 承擔額外費用total net additional cost 費用淨增加數(shù)縂額No additional cost 不會産生額外成本 返回 additional cost