这是一段祖祖辈辈、口口相传的历史。

It is an oral history, passed on from generation to generation.

youdao

这个传统是通过口口相传下来的。

The tradition was passed down _by word of mouth…

youdao

但这也是口口相传运动的好的扩展。

But it's still a good extent for your "word of mouth" campaign.

youdao

但这也是口口相传运动的好的扩展。

But it's still a good extent for your "word of mouth" campaign.

youdao