We spent hours lost in the world of books.

Meaning: This means that we were completely absorbed in reading and didn't notice how much time had passed.

Choice of Words: Spent means to use or pass time doing something. Lost means unable to find one's way or to be unaware of one's surroundings. World means the place where people live or the area around them. Books are written or printed works that contain information or stories. When you put them together, "We spent hours lost in the world of books" means that we were so engrossed in reading that we were unaware of the passage of time.

Alternative Expressions

Related Expressions