It's necessary for you to keep secrets for your friends.

为你的朋友保守秘密是有必要的。

youdao

If your best friend tells you his secrets, it's necessary for you to keep them for him.

如果你最好的朋友告诉了你他的秘密，你就有必要替他保密。

youdao

I haven't shown it yet, but you needn't imagine I shall keep your ridiculous secrets.

我还没有给他看，可你用不着幻想我会保守你这荒唐的秘密。

youdao

But like a CIA agent or the rare hair stylist who'll keep your secrets, gossip is not in the mystery shopper's after-hours repertoire.

CNN: Confessions of a hotel mystery shopper