You can also sign-up to secret wild swims across the UK.

你还可以在英国各地加入野外秘密游泳。

youdao

From here they were taken to secret detention centers, the majority never knowing the charges being held against them.

他们将被带到秘密的拘留中心，他们之中的大部分人都从未知道他们是因为什么罪名被指控。

youdao

Exam authors are confined to secret compounds while the test is being written, while the printing is carried out by inmates at maximum-security prisons.

出卷者被要求严格保密，直至考试开始，考卷被同室的“囚犯”带出去时他们都被关在最高戒备的“监狱”里。

youdao

The experts expect their one-year global probe into secret detention centers to shine more light on the extensiveness of these facilities and how they operate.

VOA: standard.2009.03.21

And then he says to Franny: "I'll tell you a terrible secret. Are you listening to me?

然后他对弗兰尼说：,我告诉你一个很可怕的秘密，你在听吗？

耶鲁公开课 - 1945年后的美国小说课程节选

If you have some plain text, some message that you want to send, well, you can encrypt it or you can scramble it using a key, a secret key, which might be a physical machine like the Enigma 13 or it might be a number like 13.

如果你有没有加密的文本，你想要寄送的一些消息,你就可以加密它,或者你可以用一个密钥使其变得混乱，那就像一个英格玛的物理装置,或者他就是一个数字。

哈佛公开课 - 计算机科学课程节选

That's the name for snatching suspects on foreign soil and taking them to secret locations for questioning.

NPR: Rice Defends U.S. Policy During Stop in Germany

To date, the agency has granted access to secret-level classified information to 744 front-line supervisors, managers and behavior-detection officers.

CNN: 10,000 airport security workers to get higher clearances

It reported that the unit had access to secret data from Nato countries.

BBC: Canadian naval officer charged with spying