I must admit that I too use this system.

我必须承认，我也在利用这种制度。

youdao

I must admit that I didn't actually do anything to help her.

我必须承认，我实际上并没有做任何事情来帮助她。

youdao

I must admit that I only eat cabbage because I know it's good for me.

我得承认我只吃椰菜，因为我知道那对我有益的。

youdao

He wasn't that widely read, I must admit, but it shows us how far pro-slavery could ultimately go.

我必须承认,他的作品流传不广,但他向人们展示了亲奴主义者可以走多远

耶鲁公开课 - 美国内战与重建课程节选

I, for one, must admit that I look forward to my daily trip to the mailbox at the end of the driveway.

FORBES: Is it Time to Wave Farewell to the Mailman?

"I hate everything that has happened, and now I must admit I feel even worse, knowing what allegedly was happening so close to me, and that I was unaware, " he wrote.

CNN: Alleged Sandusky victim details abuse

And I must admit that a little bit of their adrenaline rubbed off on me too!

BBC: NEWS | School Report | 'Stressful - but lots of fun'