You login to Facebook and start watching YouTube videos.

你登录到Facebook上，开始看YouTube上的视频。

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After getting help from a psychiatrist, the patient determined not to login to Facebook any more — and the asthma attacks stopped.

经过一位精神病医生诊断后，他决定再也不用Facebook了——而哮喘也自此不再发作了。

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How often do you hear that 90% of Facebook users login to the site once per week?

你听说过多少网站能够保证90%的Facebook用户每周登陆一次网站呢？

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Many Diablo 3 players are playing on laptops they normally use just to login to Facebook.

FORBES: Why 'Diablo 3' Matters For PC Gaming

He gave her the login details to his Facebook account.

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Although it has the same kind of simple approach to a login as a Facebook or Twitter pop-up window, Persona's emphasis is on privacy: it stops paying attention the moment credentials go through, keeping any diatribes or subscription details from landing in social streams or central databases.

ENGADGET: Mozilla Persona sign-in launches in beta, skips the social networking ball and chain (video)