期刊
NATURE
卷 614, 期 7949, 页码 606-606出版社
NATURE PORTFOLIO
DOI: 10.1038/d41586-023-00482-7
关键词
Business; Government; Technology; Politics
The US has shot down four flying objects due to concerns about spy balloons. However, what other purposes do high-altitude balloons serve?
The US has shot down four flying objects over fears of spy balloons. But what else are high-altitude balloons used for?
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