I tried to reassure her, "Don't worry about it. We won't let it happen again."

我尽力使她安心，“别担心，我们不会允许它再发生的。”

《柯林斯英汉双解大词典》

If you can't attend a family celebration, don't worry about it.

如果你不能参加家庭庆祝活动，不要担心。

youdao

It meant don't worry about it.

它表示“不要为此担心”的意思。

youdao

So let us see it. I am sure I will help him. Do not worry about it.

VOA: standard.2009.11.08

But don't worry about it, it's not, I'm just using it because it's a simpler example than the one I really want to get to, which is knapsack.

但是别担心，我讲这些是因为它比我,真正想讲的问题简单一些，我想讲的是背包问题。

麻省理工公开课 - 计算机科学及编程导论课程节选

We have the dialectic of suspense on the one hand, how will this be resolved, and inevitability on the other, "Oh, it's a folk tale, it'll be resolved, don't worry about it."

我们一方面有悬念的对立，就不可避免地会有，另一个方面，即这个会怎样解决，“哦，这是个传说，这会解决的，不用担心它“

耶鲁公开课 - 文学理论导论课程节选

"Crashing is part of bike racing I just try not to worry about it, " Stevens said.

WSJ: Cycling's Occupational Hazard

And I personally think that, with bankruptcy, I just worry about it turning people off.

NPR: What Can Automakers Do To Win Bailout?

" Clinton joked that at least one of her counterparts said, "Don't worry about it.

CNN: The Sweep: WikiLeaks stirs anarchy online