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Ключевые слова:
accessory, accuracy, back, background, centimeter, child, class, closeup, college, copy, design, education, element, equipment, geometry, inch, instrument, item, kid, knowledge, learn, learning, length, lesson, line, math, measure, measurement, measuring, millimeter, object, office, one, precision, pupil, ruler, school, size, space, stationery, student, study, studying, supply, table, text, tool, university, wooden, work,