为了简化场景，您将仅仅使用姓氏和名字填充客户 BO。

To make the scenario simple, you will only populate a customer BO with the first name and last name.

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保险业巨头阿维瓦公司对其100多万名客户的资料进行分析后发现，史密斯竟是英国最普遍的姓氏，其次是琼斯和威廉姆斯。

The analysis of just over one million customers by insurance giant Aviva came up, not unsurprisingly, with Smith as the most popular surname, followed by Jones and Williams.

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Last Name：客户的姓氏。

Last name: customer's last name.

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