求翻译：例如，一件事，只有亲身经历过，才会明白当时的感觉和体会得很透彻，这是书本知识所不具备的，因为在书本上学到的知识永远只是二手的，不会给我们留下多么深刻的印象。是什么意思？

For example, one thing, only personal experience, will understand the feeling and appreciate the very thorough book knowledge does not have, because the knowledge learned in books to be only second-hand, not left us What a profound impression.

正在翻译，请等待...

For example, a matter, only then the personal experience, only then has been able to understand feeling then and realized very thoroughly, this is the book knowledge does not have, because goes to school in the books the knowledge forever is only two, cannot make the how profound impression to us.

For example, one of the things that only experienced, can understand the feeling and experience of thoroughly, this is the book knowledge that does not exist, because in the books forever second-hand learned knowledge, will not leave us so deeply impressed.

I'll be ready to meet the coming of the new term