bosom

胸；胸怀；中间；胸襟；内心；乳房；内部英释nnthe front part of a woman’s chest

怀抱；把…藏在心中vv

知心的；亲密的英释adjadjA bosom buddy is a friend who you know very well and like very much

1 bosom friend,知己；知心朋友；契友

2 in the bosom of,在（亲人）之间

1 She cradled the child to her bosom..她把那孩子抱入怀中。

2 They were bosom buddies..他们曾是知心的伙伴。