It was the best known and probably the most popular of her songs.

这是她最著名的、大概也是她最受欢迎的歌曲。

He wants to keep them all in his office for reasons best known to himself.

他想把他们都留在他的办公室里，原因只有他自己知道。

He became one of the best known actors.

他成为了最著名的演员之一。

Is it a coincidence, we wonder, that the most innovative companies are also the best known brands?

我们想知道的是，最具创新性的公司同时也是最知名的品牌，这是不是巧合呢？

Indianapolis is best known for the Indianapolis 500, which is a popular 500-mile (805 km) automobile race held once every year.

印第安纳波利斯最著名的赛事是印第安纳波利斯500，这是一场每年举行一次的、受欢迎的500英里（805公里）汽车赛。