单式簿记

例句：

1. 1. We need to use a simple bookkeeping system to track expenses.
   我们需要使用一个简单的记账系统来追踪开支。
2. 2. The company uses a single accounting method for all its subsidiaries.
   该公司对所有子公司采用单一的会计方法。
3. 3. The financial team is responsible for maintaining a single ledger for alltransactions.
   财务团队负责维护所有交易的唯一账簿。