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	Senussi senza replica SEO Seoul sep. sepal separability separable separableness separably separate separate but equal separately separateness separate (or sort out) the men from the boys separate (or sort) the wheat from the chaff separate school separate the men from the boys pectineal pectinesterase pectineus pectinibranch pectinic acid pectinid pectiniform

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