pertinacious
adjective formal uk/ˌpɜː.tɪˈneɪ.ʃəs/ us/ˌpɝː.tənˈeɪ.ʃəs/
坚决的；坚忍不拔的；顽强的
very determined and refusing to be defeated by problems
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。
Synonyms: doggedpersistenttenaciousunyielding