1
lifelong + noun
lifelong 作前置定语修饰名词，表示持续一生的。
She has been a lifelong friend.
她一直是一位终身的朋友。
终身的；毕生的
先理解核心含义，再看它在真实句子里的用法。
终身的；毕生的
lasting for the whole of a person's life
She has been a lifelong friend.
她一直是一位终身的朋友。
贯穿生命全程
Extending for the entire duration of life.
持续一生
continuing through life
She has been a lifelong learner, always taking courses to acquire new skills.
她是一个终身学习者，总是参加课程来获取新技能。
AI contextual example
His lifelong dream was to travel around the world.
他终身的梦想是环游世界。
AI contextual example
The two friends developed a lifelong friendship after meeting in college.
这两位朋友在大学相识后建立了终身的友谊。
AI contextual example
a lifelong friend
一位终身好友。
WordNet
lifelong 作前置定语修饰名词，表示持续一生的。
She has been a lifelong friend.
她一直是一位终身的朋友。
He had a lifelong dream of traveling the world.
他有一个环游世界的终身梦想。
Not this
I want to learn lifelong.
Use this
I want to learn throughout my life.
lifelong 是形容词，不能直接修饰动词 learn。应改为介词短语 throughout my life 或使用 lifelong learning 结构。
Not this
Lifelong is necessary.
Use this
Lifelong learning is necessary.
lifelong 是形容词，不能单独作主语。需要搭配名词（如 learning）构成名词短语。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
终身学习
She believes in lifelong learning and constantly takes new courses.
她信奉终身学习，不断参加新课程。
终身朋友
They have been lifelong friends since childhood.
他们从童年起就是终身朋友。
终身梦想
Traveling around the world was his lifelong dream.
环游世界是他终身的梦想。
终身的热情
Music has been her lifelong passion.
音乐一直是她终身的热情所在。
终身的承诺
Marriage is a lifelong commitment.
婚姻是终身的承诺。
终身的抱负
Becoming a doctor was his lifelong ambition.
成为一名医生是他终身的抱负。
Use lifelong naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想 'life'（生命）和 'long'（长），生命很长，贯穿一生，即‘终身’的。
语域：neutral 常见场景：学习、目标、影响、友谊 通常用于描述持续一生的事物，语域中性，常见于正式和非正式场合。
通常用作定语，修饰名词，如 lifelong learning（终身学习）
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.