know sb by face

例句：

1. 1. She doesn't know the manby his face; she only knows himby his name.
   她不认识这个人，只知道他的名字。
2. 2. He was so good-lookingthat he could easily be recognized by hisface alone.
   他长得很好看，光凭脸就能轻易辨认出来。
3. 3. The police officer recognizedthe criminal by his face, andquickly apprehended him.
   警察通过罪犯的脸认出了他，并迅速将其逮捕。