信息发送系统，使用计算机网络，尤其是互联网，传送以主题群组织的信息。
A messaging system that USES a computer network, especially the Internet, to transfer messages organized in thematic groups.
无法从现有群组中找到包含您的主题区域或特定兴趣的群组；
You can't find an existing group that addresses your topic area or specific interests.
好在群组一直保持活跃，并且在这一主题上有一本非常受欢迎的新书刚刚出版。
The group remains active and a well-received new book was recently published on the subject.
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