I I vowed never to reveal the secret.

我发誓决不泄漏这一秘密。

youdao

I beg of you not to reveal the secret.

我请求你不要揭露那个秘密。

youdao

They told me not to reveal the secret.

他们要我不要把秘密泄露出去。

youdao

You are the only one who can reveal the secret.

VOA: special.2009.01.31

And when Governor Romney finally had a chance to reveal the secret sauce, he did not offer a single new idea.

WHITEHOUSE: Remarks by the President at a Campaign Event -- Boulder, CO

He said the final report would reveal "all but the most secret of information" and the "unprecedented" process would be "fully independent of government".

BBC: Iraq war inquiry to be in private

On the other hand it does reveal a little bit of the secret about why the NHS is, relatively, so cheap.

FORBES: How to Reduce the Cost of Health Care: Stop Treating People