放棄夢想的英文表達是 "give up on one's dreams" 或 "abandon one's dreams"。這兩個短語都可以用來描述一個人決定不再追求自己的夢想。例如：
- She decided to give up on her dreams of becoming a musician and pursued a more stable career.
- He abandoned his dreams of traveling the world to focus on his family and responsibilities.
這些表達方式可以根據具體語境進行調整，但核心意思都是指放棄曾經追求的目標或理想。