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  1. sonobuoy

    • IPA[ˈsōnəˌbo͞oē]

    美式

    • n.
      a buoy equipped to detect underwater sounds and transmit them by radio.
    • noun: sonobuoy, plural noun: sonobuoys

    • 更多解釋
    • IPA[ˈsəʊnəbɔɪ]

    英式

    • n.
      a buoy equipped to detect underwater sounds and transmit them by radio.

    Oxford Dictionary