dogged

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And the sections where she points out that rote repetition and dogged perseverance are your only sure ticket to success.
还有她指出死记硬背和顽强的毅力是你通往成功的唯一可靠的门票这部分也除外。
His victory was in part a tribute to the dogged persistence and quiet moderation of a man who has led his party for eight years.
取得这一胜利的部分原因，是人们肯定一个八年来领导着自己的党的人，赞颂他顽强的坚持和平静的谦逊。
As the music finally ends and silence falls, a feeling of satisfaction sweeps over me, satisfaction that after dogged persistence and long practice I have finally accomplished it.
当这段音乐最终结束，四周回归沉寂时，一种满足感拂过我的身心。通过顽强的坚持和不懈的联系，我最终得到了这种满足。

He left office in 2007. Although he has been dogged by several scandals, he has so far avoided prosecution.
At Notre Dame Sunday, President Obama took on the issue that has dogged his visit and sharply divided and polarized Americans for decades - abortion.

Stick-to-itiveness is a real word and a handy noun coined in 1884, meaning dogged perseverance.
FORBES: Do You Prefer Success Or Achievement?
Billions in market value evaporated as Bristol-Myers was dogged by bad luck and worse decisions.
FORBES: The 'Buy' Case For Bristol-Myers

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.
doggedly