sounding board
noun
1
- a board or screen placed over or behind a pulpit or stage to reflect a speaker's voice forward（设在讲台、舞台上方或背后以增加音响效果的）传声屏, 共鸣板。
1.1
- another term for SOUNDBOARD.
2
- a person or group whose reactions to suggested ideas are used as a test of their validity or likely success before they are made public被征询的人（群）（指在某些意见、设想公布前能从他或他们身上探测这些意见、设想是否可行）。
2.1
- a channel through which ideas are disseminated传播渠道。