education high school university learning and people concept - teacher giving tests to students at lecture
ID: 505405801
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- 大图:5126 × 3124 像素·43.4 cm × 26.45 cm·300dpi·JPG
- 中图:1000 × 609 像素·35.28 cm × 21.48 cm·72dpi·JPG
- 小图:500 × 305 像素·17.64 cm × 10.76 cm·72dpi·JPG