The principal recommendation system emphasizes the principal's recommendation letter.

校长推荐制强调校长的推荐信。

The principal recommendation system is a new admission method.

校长推荐制是一种新的招生方式。

Some parents are skeptical about the principal recommendation system.

有些家长对校长推荐制持怀疑态度。

The principal recommendation system might affect the students' future.

校长推荐制可能会影响学生的未来。

Through the principal recommendation system, students can enter good schools more easily.

通过校长推荐制，学生可以更容易进入好学校。

But is del.icio.us a recommendation system?

但是del.icio.us是一个推荐系统吗？

Pandora - The Recommendation System Based on Genetics

潘多拉(Pandora)——基于基因的推荐系统

A great recommendation system can retain and attract users to the service.

一个好的推荐系统能够为这项服务留住并且吸引用户。

Amazon also offers an excellent recommendation system, and I can envision some users opting for the Kindle application on their fancy new iPads.

亚马逊还提供了一个非常漂亮的推荐系统，我相信一些用户还是会在他们的新iPad上安装Kindle应用。

The social-graph-based recommendation system, combined with location-relevant information, provides comprehensive suggestions to users for local businesses.

基于社交图谱的推荐系统，再加上相关定位信息，可以为用户提供参加本土商业活动的有关建议。