How much more efficiency can be wrung out of the jet engine - technology which is over 70 years old?
from BBC News - World https://ift.tt/2uWL4Ml
from BBC News - World https://ift.tt/2uWL4Ml
PM Abiy Ahmed says the military will try not to harm civilians and urged people to stay at home. from BBC News - World https://ift.tt/39kHldw
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