• 航天háng tiān spaceflight
• 宇宙飞行yǔ zhòu fēi háng spaceflight; interstellar flight
• 行星间的háng xīng jiān de interplanetary
• 生星际的shēng xīng jì de interplanetary
• 太阳系内的tài yáng xì nèi de interplanetary
• 宇宙航行yǔ zhòu háng háng interplanetary flight; astronavigation; space navigation

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