A mature hand writing business and different graphs charts on a clean blackboard with a chalk
ID: 726251713
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- 大图:7500 × 5077 像素·63.5 cm × 42.99 cm·300dpi·JPG
- 中图:1000 × 677 像素·35.28 cm × 23.88 cm·72dpi·JPG
- 小图:500 × 338 像素·17.64 cm × 11.92 cm·72dpi·JPG