But we recently solicited papers for a technical conference to discuss email systems and anti-spam methods by sending requests to50 people we had never met who had published on this topic.

但我们最近才为了某个有关电子邮件系统与防垃圾邮件方法的技术会议，发函给未曾谋面的50位人士，以便邀集对方发表过的相关论文，但这50位人士当中并没有任何人抱怨。