ሳይንስተመራማሪው ክትባት ለማግኘት ተስፋ ሰንቀዋልTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስTesfalem Waldyes Erago6 ኅዳር 2010ረቡዕ፣ ኅዳር 6 2010https://p.dw.com/p/2nhbXማስታወቂያ