。
I turn the pages of the book.
Literal
Book [attributive-の] pages [object-を] turn.
A minimal, matter-of-fact sentence. めくる ('to turn, flip over,' transitive) is the specific verb for turning pages or flipping things over. ページ is a katakana English loanword. The dictionary-form present tense makes this feel like a stage direction or habitual description rather than a single event.