我觉得非常不错。
我觉得本书的内容分层很不错,“书”和“参考资料”分的非常清楚,如果你需要找参考资料的话。
I liked this separation of material, a separation of the "book" and the "reference material" if you will.
这是很不错的概念而且我觉得那个实际上也是非常好用。
This is a really cool concept and I found that it was actually pretty easy to use.
and... but it's really fun. I think most of the people are very good, nice people.
但同时也非常有趣。我觉得这里大多数人都是很不错的。
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