... private branch exchange 专用小交换机 private cargo 私人货物 Private Carrier 私人承运人 ...
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For NASA, Mr. Musk's partner, the goal is to validate development of private cargo vehicles and eventually, fleets of space taxis to take astronauts into orbit.
WSJ: SpaceX's Pioneering Flight Plans
SpaceX is not the only firm in the private-cargo business.
ECONOMIST: SpaceX goes to the ISS
Plans are in the works for private companies to begin shipping cargo to the station, and eventually to carry astronauts as well.
CNN: Russia postpones new manned space station mission
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