Both engines failing simultaneously is almost unheard of, but even then a plane wouldn't drop from the sky like a rock.

两个引擎同时失灵情况几乎所未，但即便如此，飞机也不会像石头一样从空中掉下来。

The US Journal, Science, said it was one of the most important breakthroughs of the year but you've probably never heard of it.

美国科学杂志表示这是今最重要突破一，你可能对此所未。

As a result, he offered an unheard-of guarantee.

于是，他提供了一个所未担。

" We have not heard about such numbers before" he said.

他说，" 这样庞大数字，以前所未" 。

Polo told of many amazing things that were unknown to Europe, such as paper money.

马可·波罗讲到许多神奇东西在欧洲是所未，如：纸币。

Do not imagine that it was a very unheard-of idea.

你不要以为这是所未妙论。

Mr Abe's death has deeply shocked Japan, where gun violence is almost unheard of.

在枪支暴力几乎所未日本，安倍死令人深感震惊。

That you hadn't heard before, because after all, you all went to Harvard. I did not. But then I realized that you don't have to necessarily go to Harvard.

你们所未容才好毕竟你们都进了哈佛深造 而我却没有但后来我意识到 并不一定要来哈佛。

After all, voluntary food rejection was almost unheard of in America at the time.

毕竟，自愿不吃食物在当时美国几乎所未。

That dog that day pulled 13,661 pounds which is unheard of.

那只狗那天拉了13661磅重，这是所未。

Mass shootings are rare but not unheard of in Thailand.

大规模枪击事件在泰国很少见，但也并非所未。

It is a trait that is not known to the higher animals.

这是一种高级动物所未特点。

So, a cousin we didn't know existed framed us?

我们被一个所未表兄弟陷害了吗？

A young white man stopped to help her, generally unheard of in those conflict-filled 1960s.

一位青白人男子停下车来帮她，这在充满种族冲突20世纪60代简直是所未。

It's unheard of. - Yeah! Unheard of.

从没听说过 - 是啊 所未。

Data can be a really extraordinary storyteller, unveiling the hidden narratives of things in our everyday lives that we never would have seen.

数据讲述故事能力非比寻常，它们可以揭露我们日常生活中鲜为人知事实，有些我们甚至所未。

Swarms like this aren't totally unheard of.

这样虫群并不完全是所未。

We were blue-collar, working-class people, and so professionals like lawyers were not heard of in my circles as a child, but I met my first character as a lawyer by Perry Mason.

我们是蓝领工人阶层，所以像律师这样专业人士在我小时候圈子里是所未，但我第一次接触到了佩里·梅森扮演律师角色。

During the global lockdown, De Plaen says he and his colleagues have been able to detect " songs" — in this case, seismic signals — they didn't even know existed.

De Plaen 说在全球封锁期间，他和他同事已经能探测到从前所未“歌声”了——在此指是地震信号。

This teetotal behaviour worried her husband a good deal; drinking wine was much safer than water that was usually unclean, and he was worried that she would fall ill or fade away.

这种滴酒不沾行为在当时简直是所未，也让她丈夫极为担忧，怕妻子会因此患病：其时人们常以酒代水，因为水总是不够洁净，酒相对安全一些。