invoice method

例句：

1. 1.The company uses an invoice method to track its expenses.
   该公司使用一种发票方法来追踪其费用。
2. 2.The new invoice method is expected to save time and reduce errors.
   新的发票方法预计将节省时间并减少错误。
3. 3.The company has implemented a new invoice method to improve efficiency.
   公司已经实施了一种新的发票方法以提高效率。