Teacher or student with beard wears eyeglasses sits at table with books defocused. Scientific research concept. Man on thoughtful face between piles of books in library bookshelves on background
ID: 1100095979
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- 大图:4791 × 5454 像素·40.56 cm × 46.18 cm·300dpi·JPG
- 中图:878 × 1000 像素·30.97 cm × 35.28 cm·72dpi·JPG
- 小图:439 × 500 像素·15.49 cm × 17.64 cm·72dpi·JPG