education high school teamwork and people concept - smiling teacher standing in front of students and writing something on white board in classroom
ID: 257235394
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- 大图:3191 × 1884 像素·27.02 cm × 15.95 cm·300dpi·JPG
- 中图:1000 × 590 像素·35.28 cm × 20.81 cm·72dpi·JPG
- 小图:500 × 295 像素·17.64 cm × 10.41 cm·72dpi·JPG