education high school university teaching and people concept - group of international students and teacher with marker standing at white board at lecture
ID: 1371054485
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- 大图:5760 × 3396 像素·48.77 cm × 28.75 cm·300dpi·JPG
- 中图:1000 × 590 像素·35.28 cm × 20.81 cm·72dpi·JPG
- 小图:500 × 295 像素·17.64 cm × 10.41 cm·72dpi·JPG