An office salesman in elegant suit working on a scientific project with the help of a laptop concept
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- 大图:5458 × 2688 像素·46.21 cm × 22.76 cm·300dpi·JPG
- 中图:1000 × 492 像素·35.28 cm × 17.36 cm·72dpi·JPG
- 小图:500 × 246 像素·17.64 cm × 8.68 cm·72dpi·JPG