ሳይንስየመመረቂያ ጥናታቸውን ወደ ተግባር የለወጡ እንስቶችTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስTesfalem Waldyes Erago30 ነሐሴ 2010ረቡዕ፣ ነሐሴ 30 2010https://p.dw.com/p/34N0zማስታወቂያ