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词汇 cosmic microwave background radiation
释义 cosmic microwave background radiation ˈkɔzmikˈmaɪkrəˌweɪvˈbækɡraundˌreidiˈeiʃən
基本英英
第二讲宇宙微波背景辐射

Noun:
cosmology the cooled remnant of the hot big bang that fills the entire universe and can be observed today with an average temperature of about 2.725 kelvin
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