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单词宇宙航行
例句 DEFINITIVE EXAMPLES 权威例句〔astronautics〕The science and technology of space flight.航天学,宇宙航行学:研究宇宙飞行的科学及技术美国传统〔command module〕The portion of a spacecraft in which the astronauts live, communicate with a ground station, and operate controls during a flight.指挥舱:宇宙航行员生活其中的航天飞机的一段,与地面站通讯,在飞行中操纵控制器美国传统Some people thought that too much money was spent on space flight.一些人认为花在宇宙航行上的钱太多了。剑桥国际
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