College student headphones smartphone. Online learning. Audio book concept. Educational technology use of both physical hardware software and educational theoretic to facilitate learning. E learning.
ID: 1484627153
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- 大图:4928 × 3280 像素·41.72 cm × 27.77 cm·300dpi·JPG
- 中图:1000 × 666 像素·35.28 cm × 23.5 cm·72dpi·JPG
- 小图:500 × 333 像素·17.64 cm × 11.75 cm·72dpi·JPG