They discovered he had an illegitimate child.

他们发现他有一个私生子。

《柯林斯英汉双解大词典》

The gene they discovered today doesn't account for all those cases.

他们今天发现的那种基因解释不了所有的那些情况。

《柯林斯英汉双解大词典》

While searching the house they discovered an unlicensed shotgun and a licensed rifle.

搜查房子时，他们发现了一支没有许可证的猎枪和一支有许可证的步枪。

《柯林斯英汉双解大词典》

They discovered a drop in pressure in the fuel cells that supplied electricity.

VOA: special.2009.06.24

Once they discovered their moral freedom, once they discovered that they could thwart God and work evil in the world, and abuse and corrupt all that God had created, then God could not afford to allow them access to the tree of life.

一旦他们意识到了，道德自由,一旦他们违背上帝，开始作恶,摧残，腐化，上帝的创造物,上帝便不准他们再接近生命树。

耶鲁公开课 - 旧约导论课程节选

I think this is taken about two years after they discovered the fourth quantum number.

这张照片拍摄于他们发现,第四个量子数的两年后。

麻省理工公开课 - 化学原理课程节选

When revenue inspectors investigated, they discovered that Javid had a set up a fraudulent scheme.

BBC: VAT fraud businessman Israr Javid jailed for five years

Together, they discovered that Rome has become a lot busier in this day and age.

CNN: Connecting the past to present tougher than it looks

Three in five wives said they would end their marriages if they discovered an affair.

FORBES: Poll: 10% Of Wives Would Forgive Arnold Schwarzenegger