orbit [ˈɔːbɪt] n.轨道 spacecraft ['speiskrɑ:ft] n. 宇宙飞船 crew [kru:] n. 全体船员,全体乘务员 autonomously [ɔːˈtɒnəməsli] adv. 自主地;自治地 Space X is working with U.S.-based Space Adventures Inc. to offer the space flights, the two companies recently announced. No dates or costs for the flights were announced. , or ISS, aboard Russian Soyuz rockets.