对改变不了的事情担心也没用。

There's no point in worrying over things you can't change.

《牛津词典》

我们看到他对母亲的依赖，担心万一她有个闪失，他也会活不长。

We saw his dependency on his mother and worried that he might not survive long if anything happened to her.

《柯林斯英汉双解大词典》

他的发言消除了人们对他身体健康的担心。

His speech dispelled any fears about his health.

《牛津词典》

That's a little bit like the case we worried about when we started thinking about the soul view,right?

这就有点像我们刚开始研究灵魂观点时,担心的问题了，对吧？

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For example, if your son got in a fight with his sister and you're very concerned about him,

例如，如果你的儿子跟他的妹妹打了起来，你对他很是担心，

I need 课堂 - SpeakingMax英语口语达人

That's why it's using set braces, so don't worry about that.

这也是为什么字典用了集合的括号的原因，因此对这一点不用担心。

麻省理工公开课 - 计算机科学及编程导论课程节选