The title is in Gorky's book. Is the word poof new? Why talk about your understanding?

Does the subject want to ask, "is the word' jump' in Gorky's book fresh?" Why talk about your understanding? " ? Yes Gorky said, "I jumped at books, just like a hungry man jumped at bread." This shows Gorky's love for books. In any case, he will seize every opportunity to pounce on books and read hungrily. The word "jump" is very new. This sentence comes from Gorky, and the metaphor of the image shows that Gorky likes reading very much. As long as the book is around, he can't resist its temptation to himself.