تعلم ، وسائل الإعلام ، الإنترنت ، متوسط ، معلومات ، المفاهيم ، كتاب ، حاسوب محمول ، رف الكتب ، خلفية ، فكرة
Public Domain
علامات الصورة:
الصور ذات الصلة الخالية من حقوق الملكية
- Public Domain
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