难得一见 難得一見

    nándéyījiàn

    1. Adjectiverarely seen

    他坚持了十年,终于做出了难得一见的科研成果。Tā jiānchí le shí nián, zhōngyú zuòchū le nándéyījiàn de kēyán chéngguǒ.He persisted for ten years and finally produced a rare scientific breakthrough.