[, ] () all the things that a business pays for in order to produce and sell its products 成本基数◆The firm is seeking to cut its cost base by renegotiating salaries. 公司正在通过重新协商工资，设法削减成本基数。⨁a high / low cost base 高／低成本基数⨁to adjust / control / cut / lower / reduce a cost base 调整／控制／减低／降低／减少成本基数