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But there was one major?question left unanswered by the big reveal: what is Amazon Flex?

By Ottawa's count, 57 of the passengers were Canadian citizens, many of them also holding Iranian nationality.

By bringing the complicated gravity survey instruments into the air, the survey will provide data for the region's geoid surface with centimeter-level accuracy, thus contributing to a more precise measurement of the height of the world's highest peak.

By bringing numerous deaths and a drastic economic downturn, coupled with increasingly noticeable political divisions, the COVID-19 pandemic is becoming one of the most serious challenges in human history.

But the report also pointed out the weakness that some of the scientific achievements are not in line with market demand and professional service providers of technology commercialization are insufficient.