ሳይንስ«ትብብሩ ቴክኖሎጅን ለማሻሻል፣ ለማላመድና ለመቅዳት ያግዛል»To play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስTsehay Chanie Filatie22 ጥር 2011ረቡዕ፣ ጥር 22 2011https://p.dw.com/p/3CRb2ማስታወቂያ