ሳይንስሰሜን አሜሪካአሜሪካ ቲክቶክን ለምን ማገድ ፈለገች?To play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስሰሜን አሜሪካTsehay Filatie11 መጋቢት 2016ረቡዕ፣ መጋቢት 11 2016https://p.dw.com/p/4dwg9ማስታወቂያ