我敢保证你没听说过最新的消息。

You haven't heard the last of this, believe you me!

《牛津词典》

我从来没听说过这个地方。

I've never heard of the place.

《牛津词典》

我以前从来没听说过。

I never heard of it before.

youdao

It doesn't matter if you've never heard of them or if you never think of them again-- but, Titian. The famous Titian.

你们没听说过或者听完课就忘了也没关系,例如著名的提香

耶鲁公开课 - 欧洲文明课程节选

Because your store might not do so good, if you just first open and no one has ever heard of you,

因为你的商店也许会没那么好。如果你是第一次开店，没有人听说过你的话，

想开精品店 - SpeakingMax英语口语达人

For some of you that haven't I'll just say that it's a protein, it's 238 amino acids, which means that it's about 1,000, actually more than 1,000 atoms in size, and this protein is fluorescent.

对于那些没听说过的人,我要说它是一种蛋白质，它有238个氨基酸，也就意味着它有约1000个，实际上是超过1000个原子，这种蛋白质是有萤光的。

麻省理工公开课 - 化学原理课程节选