known of的用法和樣例：
例句
- The only way the enemy could have known of the plans was through a sell-out by one of our own men.
敵人可能得知我們計劃的唯一途徑是，我們自己人中有一個人出賣了我們。 - It is, perhaps, the best known of his works.
大概那是他最著名的作品了。 - Nothing is known of the authorship of the book.
無人知道該書是何人所寫。 - Little was known of his past.
對他的過去，人們知道很少。
