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  1. photoperiodism

    • IPA[ˌfōdōˈpirēəˌdiz(ə)m]

    美式

    • n.
      the response of an organism to seasonal changes in day length.
    • noun: photoperiodism

    • 更多解釋
    • IPA[ˌfəʊtə(ʊ)ˈpɪərɪədɪz(ə)m]

    英式

    • n.
      the response of an organism to seasonal changes in day length.

    Oxford Dictionary