I had an idea that he joined the army later, after college, but I may be wrong.

我猜想他大学毕业后参了军，不过我也许错了。

《柯林斯英汉双解大词典》

I may be wrong, but that's what I think.

我也许错了，但这就是我的想法。

youdao

I may be wrong, but it seems that it cannot.

我也许是错的，但是似乎那也不可能。

youdao

But I am willing to acknowledge I may be wrong.

FORBES: SEC Inspector General Asked to Examine to Whom SEC Staff Is Beholden

And then again I may be wrong.

FORBES: Why the Fed Should Stay Rogue

"This approach requires a long-term solution, and my biggest concern -- and I may be proven wrong -- my biggest concern is that by doing it this way, the president had undermined and set back the hopes of getting a long-term solution done on this issue, " Rubio told CNBC on Tuesday.

CNN: STORY HIGHLIGHTS