young professional engineer with protective helmet and vest is concentrating on industrial machinery in industry factory
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- 大图:7539 × 5026 像素·63.83 cm × 42.55 cm·300dpi·JPG
- 中图:1000 × 667 像素·35.28 cm × 23.53 cm·72dpi·JPG
- 小图:500 × 334 像素·17.64 cm × 11.78 cm·72dpi·JPG