形容词

1. 众所周知的;著名的;出名的
A well-known person or thing is known about by a lot of people and is therefore famous or familiar. If someone is well-known for a particular activity, a lot of people know about them because of their involvement with that activity.

2. 为人所熟知的
A well-known fact is a fact that is known by people in general.

1. widely or fully known

e.g. a well-known politician
well-known facts
a politician who is well known
these facts are well known