Bitcoin cryptocurrency digital money concept. Robot professor explains electronic mining cash financial system. Classroom interior with handwritten quote chalkboard. Blue pink colorful background.
ID: 740170381
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- 大图:5000 × 3001 像素·42.33 cm × 25.41 cm·300dpi·JPG
- 中图:1000 × 600 像素·35.28 cm × 21.17 cm·72dpi·JPG
- 小图:500 × 300 像素·17.64 cm × 10.58 cm·72dpi·JPG