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。
They say it could one day replace NASA's Space Shuttle to transport up to 12 tonnes of cargo and astronauts to the International Space Station.
中国的天舟一号货运飞船长10.6米，可携带6.5吨货物。
China's Tianzhou-1 cargo spacecraft is 10.6 meters long and can carry up to 6.5 tons of cargo.
一个第二阶段的货轮本身，具有500吨的空量，在去天王星70天里仅114吨的燃料，然后带回了614吨负载使用约254吨燃料。
Stage Two freighter could carry itself, with an empty mass of 500 tons, to Uranus in 70 days for just 114 tons of fuel, and then bring back a load of 614 tons using about 254 tons of fuel.
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