Fossil hunters have unearthed the bones of an elephant believed to be 500,000 years old.

化石寻找者们挖掘出了一头被认为有50万年之久的大象遗骨。

《柯林斯英汉双解大词典》

Too much screen time is widely believed to be the cause of unhappiness among today's young people.

人们普遍认为，屏幕使用时间过长是当今年轻人不快乐的原因。

youdao

The dead men could have been the victims of mistaken identity. Their attackers may have wrongly believed them to be soldiers.

这些死者可能是错认身份的受害者，袭击者可能误以为他们是当兵的。

《柯林斯英汉双解大词典》

He spent the last week in February writing what he believed to be the true position of the South.

VOA: special.2009.03.26

So this was a list of books that some author believed were scripture and should be read by Christians and churches.

所以有些作者认为这一系列书是圣典,基督教徒和教会都应该奉读。

耶鲁公开课 - 新约课程节选

Purification of the sanctuary was believed to be critical to the health and the well-being of the community.

圣所的净化被认为是,对整个群落的健康和幸福的一种批判。

耶鲁公开课 - 旧约导论课程节选

If the findings by a team of doctors are to be believed, 40% of the men and 56% of the women who took their lives in 2010 were aged between 15 and 29 years.

BBC: Why are young Indians killing themselves?

It is not known how many elephants have died in the recent spate of killings, which are believed to be part of a wider surge in poaching fuelled by growing Asian demand for ivory.

BBC: Elephant poaching 'rising' in Central African Republic

This fall Dirks and six scientists at the University of Toronto proved the existence of the cells in human brain tumors, pinpointing a small group of cells believed to be the driver of the tumors' growth.

FORBES: Cancer Killer