这是一个打击垃圾短信的好方法吗？

Do you think it is a good way of crackdown on spam messages?

过滤系统接受从短信中心传来的大量手机短信，然后在最短的时间内检索这些短信是否为垃圾短信，将检索结果返回短信中心。

The filter system receives lots of mobile messages from SMSC and checks these messages in a short time whether they are useless or useful and returns results to SMSC.