education concept with tree of knowledge planting on opening old big book in library with textbook stack piles of text archive and aisle of bookshelves in school study class room
ID: 1456833017
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- 大图:6912 × 2960 像素·58.52 cm × 25.06 cm·300dpi·JPG
- 中图:1000 × 428 像素·35.28 cm × 15.1 cm·72dpi·JPG
- 小图:500 × 214 像素·17.64 cm × 7.55 cm·72dpi·JPG