pertinacious

/ˌpɝː.tənˈeɪ.ʃəs/

形容词

坚决的；坚忍不拔的；顽强的
Like most successful politicians, she is pertinacious and single-minded in the pursuit of her goals.
像多数成功的政治家一样，她在追求自己的目标时坚定不移、一心一意。