ሳይንስየ“ድሮን” ሙከራ በሳምንታት ውስጥ ይጀመራል ተብሏል To play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስTesfalem Waldyes Erago9 ነሐሴ 2010ረቡዕ፣ ነሐሴ 9 2010https://p.dw.com/p/33DUXማስታወቂያ