The thirdpart, now that Constellation is cancelled, is to encourage private-sector firms to compete, so as to provide transport to and from the space station.
“星座项目”既然已经被取消，第三部分就是鼓励私人企业相互竞争，来为空间站的往返提供运输服务。
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So, what is the thirdpart there?
那么，第三部分是什么？
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The thirdpart of our series is on Personalization .