Scientist working in lab. Doctors making medical research. Biotechnology chemistry science experiments and healthcare concept. Day light and window background.
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- 大图:4312 × 3617 像素·36.51 cm × 30.62 cm·300dpi·JPG
- 中图:1000 × 839 像素·35.28 cm × 29.6 cm·72dpi·JPG
- 小图:500 × 420 像素·17.64 cm × 14.82 cm·72dpi·JPG