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supersonic speed▼[UK: ˌsuː.pə.ˈsɒ.nɪk spiːd] [US: ˌsuː.pər.ˈsɑː.nɪk ˈspiːd]
supersonic▼adjective[UK: ˌsuː.pə.ˈsɒ.nɪk] [US: ˌsuː.pər.ˈsɑː.nɪk]
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