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. 有名的; 熟悉的
adjective [原级]众所周知的
A well-known fact is a fact that is known by people in general. 众所周知的 • It is well-known that bamboo shoots are a panda's staple diet. 众所周知,竹笋是熊猫的主要食物。