2007年，宇宙飞船二号飞行器的推进系统在流场测试中于地面爆炸，三名维修工人遇难，另有三名以上人员受伤。
In 2007, the propellant system of a SpaceShipTwo craft exploded on the ground during a flow test, killing three mechanics and injuring three more.
英国维珍银河公司宇宙飞船“太空船二号”将于2010年初进行首次试航。
Virgin Galactic's space plane, the SpaceShipTwo, is expected to make its first test flights in the early months of 2010.
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