单词	extravehicular
释义	extravehicular /ˌɛkstrəvɪˈhɪkjʊlə / adjective Relating to work performed in space outside a spacecraft: extravehicular activity... Besides logging more than 259 hours in space, he has more than 14 hours of extravehicular activity, or spacewalking. That's where astronauts practice extravehicular activities, more commonly known as spacewalks. Two projects focus on advanced technologies for extravehicular activity.
随便看	non-rural non-sane non-sanity non-saturated non-scene non-sched non-scheduled non-science non-scientific non-scientist non-secretor non-sectarian non-secular non-segmental non-segmented non-segregated non-selective non-selectively non-self non-sensational nonsense nonsense book nonsense mutation nonsense poetry nonsense syllable

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