bulletin board

柯林斯詞典

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. 布告欄[美國英語]
2. N-COUNT In computing, a bulletin board is a system that enables users to send and receive messages of general interest. 電子布告欄
The Internet is the largest computer bulletin board in the world, and it's growing. 因特網(wǎng)是世界上最大的電子布告欄，并且仍在不斷擴大。