ሳይንስሀምሳ ሎሚ ሶፍትዌርTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስTesfalem Waldyes Erago5 ሐምሌ 2009ረቡዕ፣ ሐምሌ 5 2009https://p.dw.com/p/2gQMzማስታወቂያምስል Fotolia/lpstudio