سد ، الوادي ، نهر ، خزان ، ماء ، الجبل ، المناظر الطبيعيه ، التعدين ، غابة ، توليد الوقود والطاقة ، صناعة
الصور ذات الصلة الخالية من حقوق الملكية
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