他一直在开发所谓可伸展的太空屋，这是他几年前从美国宇航局购买的技术。
He has been developing so-called expandable space habitats, a technology he bought from NASA a number of years ago.
这样珍奇的太空屋最近以135，000美元出售——对于通往未来的旅程，它算是很便宜的了。
This rare piece of architecture recently sold for $135, 000—quite the bargain for a ride into the future.
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