bulletin board

柯林斯词典

1. N-COUNT A bulletin board is a board that is usually attached to a wall in order to display notices giving information about something. 布告栏[美国英语]
2. N-COUNT In computing, a bulletin board is a system that enables users to send and receive messages of general interest. 电子布告栏
The Internet is the largest computer bulletin board in the world, and it's growing. 因特网是世界上最大的电子布告栏，并且仍在不断扩大。