They had to keep their discovery a secret until they had a legal claim to the land where they had found the gold.

VOA: special.2009.02.04

They keep that night a special secret which makes them feel even closer to each other.

那天晚上的事成了他们的秘密,这让他们觉得彼此更亲近了。

耶鲁公开课 - 心理学导论课程节选

I'm going to keep this secret like a good friend.

我会像一个好朋友那样严守秘密。

That's all实战 - SpeakingMax英语口语达人

There is no need to keep it a secret, or keep it under your hat.

VOA: special.2010.05.09

How to gain, how to keep, how to recover happiness, is in fact for most men at all times the secret motive of all they do, and all they are willing to endure."

如何获得，如何保持，如何重获快乐，是多数人时刻怀有的秘密动机，是他们愿意忍受一切的目的“

哈佛公开课 - 幸福课课程节选

Will other governments trust us to keep their documents and their intelligence secret?"

VOA: special.2010.07.31

I promised Sarah that I was going to keep it a secret.

我答应Sarah我会严守秘密的。

I can't 实战 - SpeakingMax英语口语达人

William Porter would keep his time in prison a secret.

VOA: special.2010.12.17

The War Department wanted to keep the operation secret.

VOA: special.2009.07.23

The Clintons tried to keep the wedding top secret.

VOA: special.2010.08.09

Taos Indians keep their history and ceremonies secret.

VOA: special.2010.07.05

He made me promise to keep his secret.

VOA: special.2009.07.25

Hey, I can keep a secret. (LAUGHS) Really, it's just like an old scary story.

VOA: standard.other

How long can she keep it a secret,anyway? Jennifer Lopez gave birth to twins a couple of years ago and drew on her own experiences to play Zoe.

VOA: standard.2010.04.30