schoolgirl solves the problem of mathematics. school education people and learning concept - close up of student or woman hands with ruler and pencil drawing line in notebook
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- 大图:2554 × 1735 像素·21.62 cm × 14.69 cm·300dpi·JPG
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- 小图:500 × 340 像素·17.64 cm × 11.99 cm·72dpi·JPG