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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.
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