Science and education - Open book on a horizontal pile group of colorfull books on the wooden table and yellow background.
ID: 1483186217
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- 大图:4947 × 2916 像素·41.88 cm × 24.69 cm·300dpi·JPG
- 中图:1000 × 589 像素·35.28 cm × 20.78 cm·72dpi·JPG
- 小图:500 × 295 像素·17.64 cm × 10.41 cm·72dpi·JPG