闻所未闻

tā men gěi wǒ jiǎng le xǔ duō wén suǒ wèi wén de shì qing

他们给我讲了许多闻所未闻的事情。

They told me a lot of things that I had never heard before.

zhè xiē rén gěi le wǒ xǔ duō wén suǒ wèi wén de zhī shi

这些人给了我许多闻所未闻的知识。

All of these people gave me a great deal of information that I had never heard of.

zài wǒ men zhè ge xiǎo zhèn shang zhè zhǒng fàn zuì jī hū wén suǒ wèi wén

在我们这个小镇上，这种犯罪几乎闻所未闻。

In our small town, this kind of crime was almost unheard.