知心

例句：

1. 1. She is a true friend whoalways knows how to cheer me up whenI'm down.
   她是一个真正的朋友，总是在我沮丧时给我加油打气。
2. 2. He has a close bond with hisclosest confidant, the one personhe can truly trust.
   他与最亲密的知己建立了深厚的友谊，这个人是他可以真正信任的人。
3. 3. They share a deep understandingand trust, which makes their relationshipincredibly strong.
   他们之间有着深刻的理解和信任，这使得他们的关系非常牢固。