social network site的用法和样例：
例句
- Burberry, the famous fashion brand, is to launch its own social networking site next month, to deepen its relationship with customers.
时尚品牌巴宝莉下月将推出自己的社交网站，希望此举能够加深与顾客之间的联系。 - There have been a number of articles recently about the challenges big social networking sites have faced in monetizing their audiences.
最近有很多文章是关于大型社交网站在转化利润中遇到的挑战。
