| 词汇 | be known to be/do something | 
| 释义 | be known to be/do something idiom   C1 众所周知 If something or someone is known to be or do something, people know that it is true or happens, or that someone is or does something.  A daily intake of 20 mg of vitamin C is known to be sufficient in most cases to ward off scurvy. 众所周知,每天摄入20毫克维生素C就足以抵御坏血病了。  | 
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