Speaker giving presentation in lecture hall at university. Participants listening to lecture and making notes.
ID: 301680455![复制](//static.hellorf.com/hellorf/_next/images/copy.svg)
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- 大图:4050 × 2700 像素·34.29 cm × 22.86 cm·300dpi·JPG
- 中图:1000 × 667 像素·35.28 cm × 23.53 cm·72dpi·JPG
- 小图:500 × 333 像素·17.64 cm × 11.75 cm·72dpi·JPG