“刚毅的”的英语？

他们以坚忍刚毅的精神直面困境。They bore their plight with stoicism and fortitude.她刚毅的上唇常因欢乐的微笑而颤动.Her firm upper lip often twitched with a merry smile.沙利特用刚毅的目光盯住那两个男人.Sharlett fixed the two men with a steely glare....