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  1. microseism

    • IPA[ˈmʌɪkrə(ʊ)ˌsʌɪz(ə)m]

    英式

    • n.
      a very small earthquake, less than 2 on the Richter scale.
    • noun: microseism, plural noun: microseisms

    • 更多解釋
    • IPA[ˈmīkrōˌsīz(ə)m]

    美式

    • n.
      a very small earthquake, less than 2 on the Richter scale.

    Oxford American Dictionary