随着电子邮件营销活动和客户关系管理软件，RFM评级已成为一个重要的工具。
With the advent of email marketing campaigns and customer relationship management software, RFM ratings have become an important tool.
随着电子邮件营销活动和客户关系管理软件，RFM评级已成为一个重要的工具。
With the advent of email marketing campaigns and customer relationship management software, RFM ratings have become an important tool.
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