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单词	extragalactic
释义	extragalactic /ˌɛkstrəɡəˈlaktɪk / adjective Astronomy Situated, occurring, or originating outside the Milky Way galaxy: extragalactic radio sources... Hence the whole foundation of extragalactic astronomy and Big Bang theory is swept away’. It is definitely an extragalactic background. The number of these sources is consistent with the expected number of extragalactic sources in the background sky.
随便看	radio-quiet radio-quietness radio radar radio range radioreceptor radio recorder radioresistance radioresistant radioscan radioscanning radioscope radioscopic radioscopy radiosensitive radiosensitiveness radiosensitivity radiosensitization radiosensitize radiosensitizer radiosensitizing radio shack radio show radio signal radio silence radio-silent

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