Female speaker giving presentation in lecture hall at university workshop . Participants listening to lecture and making notes. Scientific conference event.
ID: 600066308
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- 大图:4812 × 2400 像素·40.74 cm × 20.32 cm·300dpi·JPG
- 中图:1000 × 499 像素·35.28 cm × 17.6 cm·72dpi·JPG
- 小图:500 × 249 像素·17.64 cm × 8.78 cm·72dpi·JPG