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Rails3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？
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。
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。
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