您要查找的是不是：
- 事务IP回溯IP trace back
- 事务work
- 回溯backdate
- 日常事务everyday concerns
- 事务处理transaction processing
- 回溯至date back
- 事务的clerical
- IP回溯IP Traceback
- 国际事务international affairs
- 你应该用IP卡。It is necessary for you to use IP cards.
- 法律事务legal affairs
- 在IP上发传真Fax over IP
- 处理事务deal with affairs
- IP核及其复用IP Core and Its Reuse
- 回溯情报检索retrospective search
- 新标准改进IP传真的互用性和可靠性New Standards Improve interoperability and Reliability of IP Fax
- 公共事务public affairs
- 不可回溯性irreversibility
- IP-10IP-10
- 回溯树backward tree
