The example in Listing 9 parses the shopping cart XML file and generates a bill with the individual item totals and the sum total for the purchase ( Listing 10).
清单 9 解析这个购物车 XML 文件并生成一个账单,该账单显示项目合计和采购总计(见 清单 10)。
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The total unadjusted points are the sum of all individual totals.