additional auditing procedure

例句：

1. 1. The additional cost of the new car is $5000.
   这辆新车的额外成本是5000美元。
2. 2. They added an extra hour to their work schedule.
   他们把工作时间增加了一个小时。
3. 3. The company has added several new products to its line.
   该公司已经增加了几个新产品到其产品线中。