penitential

基本解释

Instead, her life could be seen as an ideal model for Florentine penitential women.
对于佛罗伦萨的悔罪妇女来说，她的一生被视作是一个理想的典范。
Apparently the man's zeal for agriculture had burned with a failing flame, expiring in penitential ashes.
显然，男子对农业的热情只是燃出了失败的火焰，熄灭在后悔的灰烬里。
The peak of the scandal, in the “annus horribilis” of 2010, is past, he says. But he acknowledges that the situation in Ireland still requires a “long penitential journey”.
丑闻问题在2010年达到顶峰，但那个“多事之秋”已然过去，但是本笃也知道，依现在爱尔兰的情况来看，还需一个“持久的忏悔之旅”。

In the end, I gave up and returned to Porto Alegre, embittered by the failure of my penitential trip.
NPR: Excerpt: 'Borges and the Eternal Orangutans'
Obama's penitential Cairo sermon betrayed those Middle Easterners who embraced our ideals, who struggled for human rights and democracy, suffering prison, torture and death.
CENTERFORSECURITYPOLICY: The Obama Effect
Faced with customers irked that GOG, which was supposed to be their people, had indulged in a marketing stunt that seemed to show a Big Software disregard for their feelings, Rambourg and Iwinski doubled down on geeky, dressing as medieval monks to release a penitential apology.
FORBES: CD Projekt Interviews: Digital Distribution. Oh, And Monks.

showing that you are sorry, especially in a formal religious way, for wrong things that you have done

Penitential means expressing deep sorrow and regret at having done something wrong.