1. 我听说过那个城市。
2. I don't know him, but I know of him.
2. 我不认识他,但是我听说过他。
3. He is known by everywone as a good dentist.
3. 他是人所周知的好牙医。
4. Mary is known for her intelligence.
4. 她是因聪颖而出名的。
5. It’s known as tension from a psychiatrist's point of view.
5. 心理医生称这为紧张。
6. I know of a beauty salon.
6. 我知道一家美容院。
7. She must be well known as an excellent dancer.
7. 她一定是以一个优秀的舞蹈家而著称于世的。