追加成本, 额外费用additional: adj. 附加的,追加的,另外的。 an additio ...cost: n. 1.费用;代价,价格;成本。 2.牺牲;损害,损失 ...actual additional costs: 实际额外费用additional costs assigned to byproduct: 副产品再加工成本additional labor costs: 附加人工成本下载手机词典可随时随地查词查翻译