在声音邮件方面，那些依赖于报文索引的系统常常依赖于日期标志进行报文分类。

On the voice mail side, systems that rely on message indexing often rely on date stamps to sort messages.

youdao

在声音邮件方面，那些依赖于报文索引的系统常常依赖于日期标志进行报文分类。

On the voice mail side, systems that rely on message indexing often rely on date stamps to sort messages.

youdao