该系统每天推动50亿次的邮件投递，覆盖了4.5亿个邮箱。

This system powers 5 billion deliveries per day to over 450 million mail boxes.

youdao

该系统每天推动50亿次的邮件投递，覆盖了4.5亿个邮箱。

This system powers 5 billion deliveries per day to over 450 million mail boxes.

youdao