Does such an activity constitute a criminal offence?

难道这样的活动也算刑事犯罪吗？

《牛津词典》

You become so deeply absorbed in an activity that you lose track of time.

你是那么专注于一项活动，以致忘了时间。

《柯林斯英汉双解大词典》

In psychology, the feeling of complete and energized focus in an activity is called flow.

在心理学上，我们完全集中精力于一项活动中的感觉被称为“心流”。

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She says people might have difficulty completing an activity if they cannot expect some kind of reward in return.

VOA: special.2009.09.29

And it's a sentence you wanna use when you wanna describe an activity that

当你想描述一项活动时，你可以使用这个句型。

I feel like 课堂 - SpeakingMax英语口语达人

It's as if "thinking nothing" is not a passive activity, but an active one.

好像“脑子里一片空白“,不是一种被动行为，而是主动的似的。

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The home screen contains an activity feed that would be at home on any social network.

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Medicare can regulate what physicians are paid if and when they PROVIDE (an activity) covered services.

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Option-writing, an activity that insures the purchaser against asset-price movements, creates a particular danger.

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