Mathematics lesson concept . Flat design. Teacher character with pointer at blackboard with mathematical equations and stack of books below. Illustration for university tutoring courses ad.
ID: 489987028
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- 大图:4990 × 5002 像素·42.25 cm × 42.35 cm·300dpi·JPG
- 中图:998 × 1000 像素·35.21 cm × 35.28 cm·72dpi·JPG
- 小图:499 × 500 像素·17.6 cm × 17.64 cm·72dpi·JPG