Portrait shot of Asian professional mature male scientist in white lab coat and rubber gloves sitting look at camera smiling holding blue liquid sample in test tube while collegaue working behind.
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- 大图:6678 × 4448 像素·56.54 cm × 37.66 cm·300dpi·JPG
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- 小图:500 × 333 像素·17.64 cm × 11.75 cm·72dpi·JPG