be known as 是接职业，但它还有另外一个意思 被称为。。。
be known as 指 因为做什么职业而出名
be known for 指 因为什么事情或者事儿出名
另外：be known as, be known for, be known to 的意义和用法有什么不同？
be known as 意为“被称作”、“被认为”：
These chocolate bars are known as something else in the US, but I can’t remember what. 这种巧克力棒在美国有别的叫法，但我记不起来叫什么了。
be known for 意为“因…… 而著名”：
He was known for his frankness. 他以坦率而著称。
be known to意为“为……所知”：
He is known to the police because of his previous criminal record. 他因以前的犯罪记录而为警察所知。
be famous for;be famous as
这一对短语都是“以……而出（著）名”的意思，但它们会在含义和用法上有区别。
(1)当主语是表示人的名词时，be famous for表示“以某种知识、技能、作品或特征而出名”，be famous as 则表示“以某身份而出名”。试比较：
Einstein was famous for his Theory of Relativity.爱因斯坦以他的相对论而著名。
Einstein was famous as a great scientist.爱因斯坦以一位伟大的科学家而著称。
(2)当主语是地点名词时，be famous for 表示“以某种特点（产品）而出名”；be famous as 则表示“以什么样的产地而出名”。如：
Scotland has many lakes and mountains, and is famous for its beautiful coun