If you describe someone's actions as dogged, you mean that they are determined to continue with something even if it becomes difficult or dangerous.
例句
They have gained respect through sheer dogged determination.他們完全是憑借頑強(qiáng)的毅力贏得了尊敬。...his dogged insistence on their rights.他對(duì)他們權(quán)利的堅(jiān)決主張