音标发音英式音标 [ˌbɪɡ ˈbæŋ ˌθɪə.ri]美式音标 [ˌbɪɡ ˈbæŋ ˌθi.ə.ri]英式发音 美式发音 基本解释（宇宙创世）大爆炸理论。同根派生 英英字典剑桥英英字典 the theory that the universe began with a very large explosion of a single mass of matter