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	air grating air guitar airgun air gunner air gunnery air hammer air-harden air-hardened air-hardening airhead airheaded air heading air heater air hockey air hog air holder air hole air horn air hose air hostess airhouse air hunger airified airily airiness

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