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	vascular tissue vasculature vasculitic vasculitis vasculum vas deferens vase vasectomize vasectomy vaseful Vaseline vase shell vaso- vasoactive vasoconstriction vasoconstrictive vasoconstrictor vasodilatation vasodilation vasodilator vasodilatory vasoformative vasomotion vasomotor vasopressin

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