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General relativity▼[UK: ˈdʒen.r̩əl ˌre.lə.ˈtɪ.vɪ.ti] [US: ˈdʒen.r̩əl ˌre.lə.ˈtɪ.və.ti]
Spacetime▼[UK: spˈeɪstaɪm] [US: spˈeɪstaɪm]
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