| 单词 | 变轨 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔swing-by〕An interplanetary mission in which a space vehicle uses planetary gravitation for changes in course.借力飞行轨道：空间飞行器利用行星重力来改变轨道的行星际间使命美国传统There was a major problem when trains had to change tracks and instead of points the railway had a turntable.在当火车必须改变轨道，而铁路不用道岔却用转车台时，就会出现一个大问题。剑桥国际 |
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