a matter of notorious fact

• 众所周知的事

a matter of notorious fact的用法和样例：

例句

1. How Mark Twain became a great writer is known to us.
   马克吐温怎样成为一位伟大的作家是众所周知的。
2. It is a well-known fact that white-collar workers are not nearly so well organized or unionized as the manual workers.
   白领工人不像劳动工人那样有良好的组织，那样良好的联合，这是众所周知的事。