breast 指人或动物的胸部或胸部的前面，也指男人或女人的乳房。
bosom 文学用词，与breast同义，特指女性的乳房，也可用作比喻。
chest 指胸膛，即肋骨所包围的部分。
参考例句
1. A summer palace was half bosomed in trees. 一座夏宫半掩在大树的怀抱里。
2. Bosom big, small, how can ability solve this problem? 胸一个大，一个小，怎样才能解决这个问题？
3. The robber thrust his sword through the travelers bosom. 那强盗以刀刺穿了那旅客的胸部。
英英解释
n.
1. the chest considered as the place where secret thoughts are kept
2. a person's breast or chest
3. cloth that covers the chest or breasts
4. a close affectionate and protective acceptance
5. the locus of feelings and intuitions
6. either of two soft fleshy milk-secreting glandular organs on the chest of a woman v.
1. hide in one's bosom
2. squeeze (someone) tightly in your arms, usually with fondness
