known by many people
"a well-known politician"
"a politician who is well known"
"these facts are well known"
"a long-familiar face"
"a well-known voice reached her ears"
误 He is one of the world's most well-known writers.
正 He is one of the world's best-known writers.
析 well-known意为“著名的”,其最高级形式应为best-known,不是most well-known。