And I've discovered so many good books and so many average books through that recommendation process.

通过这个推荐过程，我发现了很多好书和很多普通的书。

So, his reach is much more broad than your average book reader.

因此，他的影响力比一般的读者要广泛得多。

It feels like we can't do it, just take a look at the average non-fiction book which is about 200 pages long.

我们会感觉自己做不到，那就拿起一本200多页的非小说类书籍试试。