周日的飞行明确了宇宙飞船建造商s caledComposites将要在明年开启装有火箭发动机的飞行计划，在太空中的试验飞行将在2011年底或2012年初进行。
Sunday's flight clears spaceship builder Scaled Composites to begin rocket-powered flights next year, and test flights in space in late 2011 or early 2012.
下降段底部四周装有8个火箭发动机，能使下降速度达到每秒0.75米的稳定速度。
The descent stage has eight rocket motors on its corners. These will slow its fall to a relatively sedate 0.75 metres a second.
下降段底部四周装有8个火箭发动机，能使下降速度达到每秒0.75米的稳定速度。
The descent stage has eight rocket motors on its corners. These will slow its fall to a relatively sedate 0.75 metres a second.
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