Let's keep it secret and give her a surprise.

让我们保守秘密，给她一个惊喜。

youdao

He tried to keep it secret from his family.

这件事他试图瞒着家里。

《牛津词典》

No one will know if we keep it secret.

如果我们不说，不会有人知道的。

youdao

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

VOA: special.2010.05.09

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

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

VOA: standard.other

But if you are trying to keep it secret from the IRS, think again.

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If that mobile device has a name like a pet, you may want to keep it secret.

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Looking for ideas for that special someone and want to keep it secret?

FORBES: 'Tis The Season For Pinterest