In China at around 200 BC, they discovered that by adding minerals to the clay they could improve both the appearance and the strength of the ceramics.

在公元前200年左右的中国，他们发现通过在粘土中添加矿物质可以改善陶瓷的外观和强度。

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However, when early humans first began to reflect on the nature of things around them, they discovered that they needed an idea of number simply to keep their thoughts in order.

然而，当早期的人类第一次开始反思周围事物的本质，他们发现只是为了让思维保持有序也需要有数字的概念。

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They discovered that by doing so they remained healthier.

他们发现这样做他们变得更健康了。

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They discovered that the additional monocytes were coming from the spleen.

VOA: special.2009.08.25

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

The Washington Post surveyed its readership and discovered that ask people what they thought was the most significant causes of the shooting.

华盛顿邮报》在读者中进行了调查,并且发现当询问人们,他们认为,枪杀案发生的主要原因是什么。

麻省理工公开课 - 媒体、教育、市场课程节选

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

They discovered that employees who are happier with their pay report lower levels of work-family conflict.

FORBES: Unhappy With Your Paycheck? Expect More Work-Family Conflict