The story has been passed down by word of mouth.这个故事是口头流传下来的。I have informed him by word of mouth.我已口头通知他了.My products aren't based on advertising hype, they sell by word of mouth.我的产品销售靠的不是天花乱坠的广告宣传，而是良好的口碑。...

word of mouth的音标：word of mouth的英式发音音标为：[wə:d ɔv mauθ]word of mouth的美式发音音标为：[wɚd ʌv maʊθ]...

n.口头传述的，口碑...