treasure chest

• 1. 

  N-COUNT A treasure chest is a box containing treasure. 珍宝箱

• 2. 

  N-COUNT If you describe something as a treasure chest of a particular thing, you mean that it is very good source of that thing. 宝库 [usu N 'of' n]

  例：

  This book is a treasure chest of information.

  这本书是一个信息的宝库。