They say it could oneday replace NASA's Space Shuttle to transport up to 12 tonnes of cargo and astronauts to the International Space Station.
他们说，它有一天可能取代美国航空航天局的航天飞机，向国际空间站运送宇航员和多达12吨的货物。
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It’s dayone of Lightfair, the annual international trade show for everything that glows, glares, flickers, or shines—500 exhibitors and 24, 000 visitors prowling row after row of light after light.