He mistakenly believed that his family would stand by him.

他误以为他的家人会支持他。

《牛津词典》

He says they mistakenly believed the standard licences they held were sufficient.

他说他们错误地以为持有标准许可证就足够了。

《柯林斯英汉双解大词典》

Students sometimes mistakenly assume that the section contains literature books.

学生们有时会错误地认为这个部分包含了文学书籍。

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And,about sixty percent mistakenly thought the sun was generally good for one's health.

VOA: special.2010.07.06

It's a widely--it is widely and mistakenly thought that the purification offering purifies the sinner or the impurity bearer or the offerer. This can't be true.

很多人错误得认为,净化祭可以净化不洁者或供奉者,身上的罪孽或不洁，事实并非如此。

耶鲁公开课 - 旧约导论课程节选

For if such holy Song / enwrap our fancy long," then we'll mistakenly convince ourselves that time could actually run backwards and that we've been returned to the Golden Age, the very first age of human history according to classical legend.

如果这神圣的天籁，永远包围我们想象的心怀“,然后我们就会错误的说服我们自己,时间实际上就会倒转,我们就会到达黄金般的国度，依照古典的传说就是人类最久远的历史。

耶鲁公开课 - 弥尔顿课程节选

The daughter of a writer, Rufina was mistakenly pronounced dead on her 19th birthday following a cataleptic attack.

BBC: The Recoleta Cemetery: Silent theatre and city of the dead

Doctors not familiar with ciguatera sometimes mistakenly give a diagnosis of chronic fatigue syndrome.

BBC: Fish food poisoning breakthrough

America's misguided Treasury Department mistakenly believes a cheaper dollar will mean a better trade balance.

FORBES: Fact and Comment