Sorry, can you give the cost again?

对不起，你能再报一次费用吗？

youdao

"Sorry, Liz. I think I was a bit rude to you."—"Forget it, but don't do it again!"

“对不起，莉兹。我想我刚才对你有点粗鲁。” —“没关系，不过以后别再这样做了！”

《柯林斯英汉双解大词典》

Unless you say sorry to him, you won't be friends again.

除非你向他道歉，否则你们就不再是朋友了。

youdao

Then again you can use "I'm sorry" ambiguously.

另外，你也可以含糊地使用“I'm sorry”。

I'm sorry 课堂 - SpeakingMax英语口语达人

And I know your instructors and parents have probably told you this time and time again, but they were right -- they're right, I'm sorry -- you'll learn that if you believe in yourself and put in your best effort, that there's nothing that you can't achieve.

WHITEHOUSE: White House Workshop: Classical Music