Smiling businessman or teacher holding a white paper above his head with a light bulb sketch. Science and business idea concept isolated on grey background.
ID: 608026928
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- 大图:5500 × 4500 像素·46.57 cm × 38.1 cm·300dpi·JPG
- 中图:1000 × 818 像素·35.28 cm × 28.86 cm·72dpi·JPG
- 小图:500 × 409 像素·17.64 cm × 14.43 cm·72dpi·JPG