n.（设在讲台、乐队上方或背后以增强音响效果的）传声结构板，宣传媒介，宣传者； 变形： 复数：sounding boards 英英释义： sounding board n.a person whose reactions to something serve as an indication of its acceptability(music) resonator consisting of a thin board whose vibrations reinforce the sound of th