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: 1357652198
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- 大图:7771 × 4135 像素·65.79 cm × 35.01 cm·300dpi·JPG
- 中图:1000 × 532 像素·35.28 cm × 18.77 cm·72dpi·JPG
- 小图:500 × 266 像素·17.64 cm × 9.38 cm·72dpi·JPG