She persisted in her search for the truth.

她执著地追求真理。

《牛津词典》

She persisted in going her own way, although I asked her not to.

虽然我劝阻她，她还是愣干。

《新英汉大辞典》

I'm so thankful she persisted!

我太感激她了，是她坚持要放。

youdao

In an 1850s anti-slavery speech she said, among other things, this conclusion in effect, she's answer the question now, "Why has slavery boomed and persisted and grows still?"

她在1850年反奴隶制演讲中说过,这段很精辟,在所有论述中尤为抢眼,她给出了问题的答案,"为何奴隶制度仍然能够蓬勃发展呢"

耶鲁公开课 - 美国内战与重建课程节选

She persisted in singing it.

NPR: 'With Billie': A Jazz Great, As Others Saw Her

Even when accounting for other related factors such as demographics and risk-taking behaviors, the correlation between televised sexual content and teen pregnancy persisted, she said.

CNN: Study links sexual content on TV to teen pregnancy

So Lisette had persisted in asking her mother, Was it Daddy she was going away with?

NEWYORKER: I.D.