pore over something
phrasal verb with pore verb uk/pɔːr/ /pɔːr/
仔细阅读，研读（通常指书或文件）
to look at and study something, usually a book or document, carefully
She spends her evenings poring over textbooks. 她每天晚上都在研读课本。
He pored over the letter searching for clues about the writer. 他仔细阅读那封信，寻找能确定写信人的蛛丝马迹。