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  1. phototropism

    • IPA[ˌfəʊtə(ʊ)ˈtrəʊpɪz(ə)m]

    英式

    • n.
      the orientation of a plant or other organism in response to light, either towards the source of light (positive phototropism) or away from it (negative phototropism).
    • noun: phototropism

    • 更多解釋
    • IPA[ˌfōdəˈtrōpizəm]

    美式

    • n.
      the orientation of a plant or other organism in response to light, either toward the source of ...

    Oxford American Dictionary