I'd never seen this before.

以前我从来没有看到过这个。

youdao

What are you looking at? Never seen this before?

看什么看啊？没见过啊？

youdao

I just saw an exposition of the photos that had never been seen before; but anyway, this is the Hotel de Ville which is down by Notre Dame.

我刚看了一个展览，都是些之前从未见过的照片；但无论如何，这就是市政厅，往下是巴黎圣母院。

youdao

"There was an extraordinary embrace of the entire city of the Olympic Games, something I have never seen on this scale before.".

VOA: standard.2010.03.01

I've read through the same thing twenty times and I've missed something obvious. Someone who's never seen it before looks at and says, did you really mean to do this?

但是它们有一双旁观者之眼,我把同一段代码读上20遍,都会漏掉一些很明显的错误，从没看过这段代码的人会告诉我？

麻省理工公开课 - 计算机科学及编程导论课程节选

and because... you know, never before have we seen this level of interconnectedness

这种水平的互联性是我们之前从未想过的，

关于全球化 - SpeakingMax英语口语达人

"You're very nervous because we had never seen this before here, " Rodriguez said.

CNN: Cuban doctors battle to control cholera outbreak

One clinical trial investigator mailed in "before" and "after" X rays of a patient whose tumor vanished after being treated with Iressa, exclaiming that he had never seen this before.

FORBES: Cover Story

"We've never seen this before, " a toxicologist told him.

FORBES: Magazine Article