"不过别担心" 的英文翻译是 "Don't worry about it."
这句话来源于英语口语中，表达的意思是不必担心或不需要担心某事。
例句：
I spilled coffee on your shirt, but don't worry about it. It will come out in the wash.
我把咖啡洒在了你的衬衫上，不过别担心，洗一洗就能洗掉。
I know you're worried about the exam, but don't worry about it. You'll do great.
我知道你担心考试，但是不用担心，你会做得很好的。