Soldiers have been training at a secret location.

士兵们一直在一个秘密的地方训练。

《柯林斯英汉双解大词典》

The reporter was taken blindfold to a secret location.

那位记者被蒙着眼睛带到了一处秘密的地方。

《牛津词典》

The building was turned into a secret military installation.

该楼被改建成一个秘密军事设施处。

《柯林斯英汉双解大词典》

But the next year, the Academy decided to keep the names of the winners a secret until the awards ceremony.

VOA: special.2009.02.20

Embedded within the explicit plot of the simile is a secret, a kind of buried narrative, and it's a hidden story that illustrates Satan's self-destruction.

深藏在这个比喻精巧的情节布局里的，是一个秘密，一个被深埋已久的故事，一个隐藏着的，阐述了撒旦自我毁灭的故事。

耶鲁公开课 - 弥尔顿课程节选

You answered that you majored in course 2. It sounds like a secret code to outsiders.

你刚才回答你的专业是课程2。这在外人听起来就像是秘密代码一样。

MIT用数字说话 - SpeakingMax英语口语达人

Meema, well, Meema crochets a mean Afghan and uses a secret ingredient in her chicken soup.

NPR: Who's Your Grandma? These Days, Nobody Is

He said the time and location would be a secret to avoid any crowds.

BBC: Guernsey animal charity to release two seal pups

It turns out that Cheney and other White House officials attended a secret meeting in March 2004.

NPR: Cheney's Furtive Ways