保险箱是一种很结实的箱子，人们把钱、首饰或者重要的东西放在里面，这样就很安全。

A 保险箱 is a very sturdy box where people put money, jewelry, or important items to keep them safe.

银行和很多酒店的房间里都有保险箱。

Banks and many hotel rooms have 保险箱.