someone might ask. "Oh,by word of mouth."

VOA: special.2010.06.20

So, a lot of it has been word of mouth.

所以很多都是口口相传。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选

Word of mouth, even, is a sort of good way to find out.

即使是通过口口相传的信息也可以找到好的实习机会。

多样的实习机会 - SpeakingMax英语口语达人

One in five said that word of mouth - getting advice from friends - was an important source of information.

VOA: standard.2009.03.30

but I think that mostly it's about the word of mouth,

但我认为喜剧大多数是要口口相传的，

街头表演很有趣 - SpeakingMax英语口语达人

Honest Tea does little marketing and most people hear about it by word of mouth.

VOA: standard.2010.02.17