2L decoder, d=5, 5h+1h
This complex engineering translates into tangible benefits:
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This is the moment a SpaceX capsule left the International Space Station on an emergency return flight to Earth prompted by a medical issue afflicting one of the astronauts. It is Nasa’s first medical evacuation, with the mission being cut a month short. Onboard were American astronauts Mike Fincke and Zena Cardman, a Russian cosmonaut Oleg Platonov, and a Japanese astronaut Kimiya Yui. Computer modelling predicted a medical evacuation from the space station every three years but Nasa has not had one before in its 65 years of human spaceflight
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贫困是顽疾，“顽”在成因复杂、难以根除、极易反复。，详情可参考爱思助手下载最新版本