A young ambitious teacher in glasses sitting at classroom desk with pile of books in front of blackboard full of math calculations numbers back to school concept.
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- 大图:4682 × 3415 像素·39.64 cm × 28.91 cm·300dpi·JPG
- 中图:1000 × 729 像素·35.28 cm × 25.72 cm·72dpi·JPG
- 小图:500 × 365 像素·17.64 cm × 12.88 cm·72dpi·JPG