见所未见

wǒ kàn dào tīng dào le hěn duō qí shì shì zhī qián jiàn suǒ wèi jiàn wén suǒ wèi wén de

我看到、听到了很多奇事，是之前见所未见，闻所未闻的。

I saw and heard of many strange things of which I had hitherto been unaware.

tā zuò zài dì bǎn shang zhè yī qī chǔ de yàng zi shì wǒ jiàn suǒ wèi jiàn de

她坐在地板上，这一凄楚的样子是我见所未见的。

She was sitting on the floor, a hopeless figure if ever I saw one.

zài zhǎn huì shang wǒ men jiàn dào xǔ duō jiàn suǒ wèi jiàn de qí huā yì cǎo

在展会上我们见到许多见所未见的奇花异草。

We saw many exotic plants at the flower exhibition, which we had never seen before.