她私下告诉了我她的计划，所以我不能和任何人讨论。

She told me about her plans ___in ___confidence, so I can't discuss them with anyone.

在我们私下交谈时，他秘密地向我吐露了他的真实感受。

He revealed his true feelings to me ___in ___confidence during our private conversation.

经理秘密地与董事会分享了敏感的财务数据。

The manager shared the sensitive financial data with the board ___in ___confidence.