هل فكرت: ماذا لو لم يتم اختراع الطائرة؟! ماذا لو استسلم المخترعون للمحاولات الاولى الفاشلة؟ ماذا لو استسلموا للهجوم والسخرية والاتهامات بعد كل فشل؟ شاهد هذا الفيديو وفكر في دروس مستفادة
شاهد المحاولات الاولى لاختراع الطائرة
وفكر في دروس مستفادة
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