ሳይንስሸክመ ከባዶቹ የእጅ ስልኮች ተወዳጅ ሆነዋል To play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስTesfalem Waldyes26 ታኅሣሥ 2009ረቡዕ፣ ታኅሣሥ 26 2009https://p.dw.com/p/2VGwnማስታወቂያ