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supersonics▼noun[UK: ˌsjuːpəˈsɒnɪks ] [US: ˌsupərˈsɑnɪks ]
ultrasonics▼noun[UK: ˌʌl.trə.ˈsɒ.nɪks] [US: ˌʌl.trə.ˈsɒ.nɪks]
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