Penturonic acids have not been found in nature.

戊糖醛酸还未在自然界中发现。

youdao

So far these transitional forms have not been found.

到目前为止，我们还没有发现鲸的过渡形式。

youdao

But prions have not been found in these products.

但是，在这些产品里尚未发现朊病毒。

youdao

By the way, some of it were not pleasant; the cultural wars I found very unpleasant, although it may have been the most important kinds of thing I did.

顺便说一下，这个经历并不是一直很愉快;,我自己不怎么喜欢文化论战，虽然,我最重要的工作很可能是在那个时期。

普林斯顿公开课 - 人性课程节选

They found, not surprisingly, that it tends to--mutual funds have been growing more rapidly in countries that have stronger securities laws and institutions, especially laws that protect individual shareholders rights.

他们发现,那些共同基金发展较迅速的国家,都拥有比较健全的证券法规和完善的证券制度,其中保护个人股东权利的法律尤为完善

耶鲁公开课 - 金融市场课程节选

Or I have once been to a party and I found my shirt was misaligned, seriously misaligned, not one button but--Anyway, so--and so I feel when this happens I'm very immature.

或者有一次我去参加聚会,我发现我的衬衫扣错了，扣得很错，不只是扣错一粒纽扣，发生这种事时，我觉得太没面子了。

耶鲁公开课 - 心理学导论课程节选

On "Fox News Sunday, " he said authorities cannot be positive there are not more explosives somewhere that have not been found.

NPR: Boston Marks Week From Marathon Bombs With Silence

And my thoughts and prayers go out to the family of the 11 workers who have not yet -- who have not been found.

WHITEHOUSE: President Obama Speaks on NYC Incident and BP Oil Spill in Louisiana | The White House

The official added that the Iraqis were engaged in "an elaborate denial and deception effort" and that it is "really no surprise" that more weapons have not been found.

CNN: U.S. official: Congress to get CIA's Iraqi WMD report