RB: I see you also provide a video tutorial series for Rails 3 as well. Is this companion content for the book or completely separate material than the book?

RB：我看到你还提供了一系列的Rails 3视频教程，这些视频是补充书里面的内容呢，还是完全不相关呢？

youdao

He may be slow to make friends, perhaps content with only one companion.

他交朋友也许很慢，可能他只要有一个同伴就很满足了。

youdao

Special companion content that is synced to local broadcast news, sports and entertainment programming.

ENGADGET: ConnecTV officially launches, gives you more ways to bug your buddies

Furthermore, the editorial agenda of both the TV show and web companion content will be closely aligned.

ENGADGET: ESPN launches ESPNFC site and apps, updates ESPN Goals with match previews, highlights

Slingbox Companion will feature content discovery tools that help customers find shows based on their interests.

ENGADGET: Slingboxes get My Media syncing to USB, Companion iPad app for at-home viewing