ሳይንስየኤሌክትሪክ ኃይል ከቆሻሻ To play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስTesfalem Waldyes13 መጋቢት 2009ረቡዕ፣ መጋቢት 13 2009https://p.dw.com/p/2ZkXuማስታወቂያ