英语词汇free-return trajectory怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	free-return trajectory
释义	free-re·turn trajectory /ˈfriːrɪˈtɜːn/ (宇宙飞船的)自动返回轨道
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