User experience. School teacher hold mobile phone chalkboard background. Teacher bearded man learn use modern technology. Learn technology. Modern communication. School application. Study technology.
ID: 1497253754
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- 大图:6488 × 4182 像素·54.93 cm × 35.41 cm·300dpi·JPG
- 中图:1000 × 645 像素·35.28 cm × 22.75 cm·72dpi·JPG
- 小图:500 × 323 像素·17.64 cm × 11.39 cm·72dpi·JPG