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1·Some people believe that it is difficult to protect users' privacy on social network sites.

一些人认为很难在社交网站上保护用户的隐私。

2·Social network sites are usually free to join.

社交网站是免费加入的。

3·People e's opinions vary greatly on social network sites.

人们对社交网站的看法有很大区别。

4·But some people don't approve of the social network sites.

但有些人不认同的社会网络网站。

5·But some people don't approve of the social network sites.

但是有些人不赞成社交网络网站。

6·However, opponents think it is difficult to protect users' privacy on social network sites.

然而，反对者认为很难保护用户隐私的社交网络网站。

7·Sharing information through social network sites or instant messenger reinforces relationships ( (Boyd).

在社交网站分享信息或即时通讯加强了人际关系（（博伊德）。

8·This will become more important as people leave messages on social network sites before they commit crimes.

当人犯罪前在公共网站留下信息，这一问题将越发重要。

9·Maybe I should become an accountant and live a secret life and stay away from all kinds of social network sites.

或许我该当一名会计师，生活低调隐秘，远离各种社交网络。

10·In recent years, social network sites like Renren and Kaixin have rapidly gained popularity among all kinds of people.

近年来，像人人网和开心网的社交网站已迅速得到普及，在各种各样的人。