portrait of a young girl student with glasses smiling in a music classroom during a school day - 書呆子 個照片及圖片檔女孩, 十二歲到十三歲, 幸福
man in server room working on a laptop surrounded by glowing servers. illustration - 書呆子 幅插畫檔、美工圖案、卡通及圖標男人, 插圖, 技術
a young woman with glasses smiles confidently, holding colorful books and wearing a backpack outdoors - 書呆子 個照片及圖片檔印度人, 大學學生, 學生
a studious young man dressed neatly, in round glasses is reading and studying among tall stacks of books. - 書呆子 個照片及圖片檔眼鏡, 男人, 僅男人
woman programmer teaches students how to code with a console projection on the wall - 書呆子 個照片及圖片檔技術, 學生, 教育
