She had the impression that someone was dogging her steps.

她感觉到有人在尾随她。

《牛津词典》

He had the strong impression that someone was watching him.

他强烈地感觉到有人在监视他。

《牛津词典》

It was evident that someone had gone through my possessions.

显然有人翻过我的物品。

《柯林斯英汉双解大词典》

Police could have to take action if they have a "reasonable suspicion" that someone is in the country illegally.

VOA: special.2010.05.01

So, this is a photograph that someone took on the internet of a real world receipt from a restaurant somewhere I think in the UK and I think the take away will perhaps be cleared pretty fast.

这是某人在网上得到的照片,其中是英国,一个餐厅的收据,我们看一看。

哈佛公开课 - 计算机科学课程节选

But I'm not sure that you can really make that assumption based on something that someone creates

但我不确定你真的能基于某人创作的某些作品来做那样的推断，

印象深刻的展示会 - SpeakingMax英语口语达人

"For me, there's nothing pejorative about saying that someone is Jewish or not, " he said.

BBC: Apple drops 'Jew or not Jew' app in France

His thoughts lined up, his plan was orderly and clear: he needed to be that someone.

NEWYORKER: Max at Sea

Unfortunately for him, that someone happen to be working for the Feds and wearing a wiretap.

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