" See you in the mug book, " he said, and walked away, still grinning.
“相册上见，”他说着走开了，脸上还挂着笑容。
英语百科
Mug book
A mug book is a collection of photographs of criminals, typically in mug shots taken at the time of an arrest. A mug book is used by an eyewitness to a crime, with the assistance of law enforcement, in an effort to identify the perpetrator. Research has shown that grouped photos result in less false-positives than individually displaying each photo.