Light bulb on the open book concept of innovation idea knowledge. Self-learning and education.
ID: 2163275895
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- 大图:5543 × 3282 像素·46.93 cm × 27.79 cm·300dpi·JPG
- 中图:1000 × 592 像素·35.28 cm × 20.88 cm·72dpi·JPG
- 小图:500 × 296 像素·17.64 cm × 10.44 cm·72dpi·JPG