周しゅう知ちの事じ実じつ

expression, noun

common knowledge; well-known fact

A set phrase used to state that something is widely known and accepted as true. Often used in formal or explanatory contexts.

• 彼かれが優すぐれた研けん究きゅう者しゃであることは周しゅう知ちの事じ実じつだ。

  It is common knowledge that he is an outstanding researcher.