"become well known" 是一个常用英语短语，字面直译是“变得被广泛知晓”，核心意思是“出名、成名、变得有名气”，强调从“不为人知”到“被大众/特定群体熟悉”的转变。
"become"：系动词（linking verb），表示“变成、成为”，连接主语和表语（描述主语的状态变化）；
"well known"：形容词短语（复合形容词），作表语，意为“众所周知的、有名的”。
"become well known" 可用于人、物、地点、事件等主语，常搭配介词for（表“因...出名”）或as（表“作为...出名”），也可直接接范围（如“在...领域/群体中出名”）。
强调“出名的原因”，后接具体的事物、技能或行为。
The writer became well known for her moving novels about rural life.
这位作家因她关于乡村生活的感人小说而出名。
This café has become well known for its homemade pastries.
这家咖啡馆因其自制糕点而出名。
强调“出名的身份或角色”，后接职业、身份或称号。
He became well known as a talented pianist at a young age.
他年轻时就作为才华横溢的钢琴家而出名。
The city is now becoming well known as a hub for tech startups.
这座城市现在正作为科技创业中心而出名。
可在句末加“in/among + 群体/领域”，说明“在何处出名”。
The band became well known in the local music scene.
这支乐队在当地音乐圈变得有名。
Her artwork has become well known among contemporary art collectors.
她的作品在当代艺术收藏家之间传开了。
一般过去时（描述过去的变化）：She became well known after winning the award.（她获奖后出名了。）
现在完成时（强调对现在的影响）：The brand has become well known worldwide.（这个品牌已闻名全球。）
作表语（跟在系动词后）：不用连字符，如 He is well known.（他很有名。）
作定语（修饰名词前）：用连字符，如 a well-known singer（一位知名歌手）、a well-known tourist spot（一个著名景点）。
"become well known" 可替换为 become famous（更口语化，强调“著名”）、rise to fame（强调“成名的过程”），但 "well known" 更侧重“被广泛知晓”，语气比 "famous" 稍弱（例如：a well-known local chef 是“当地有名的厨师”，而 a famous chef 是“著名厨师”）。
综上，"become well known" 是描述“从无名到有名”的常用短语，核心是状态变化，通过搭配不同介词可精准表达“出名的原因、身份或范围”。