Sometimes convenience or practical necessity or just the fancy of an influential person can establish a fashion.

有时，某种便利或实际的需要，或仅仅是一个有影响力的人物的幻想就可以引领一种时尚。

youdao

We bought a camper van so we could go away whenever the fancy took us.

我们买了一辆野营车，所以我们啥时想去野营就可以去。

《牛津词典》

I'm taking my girlfriend to the fancy new restaurant for her birthday tonight.

我今晚要带我女朋友去那家新开的高级餐厅为她庆生。

youdao

At a black-tie event, the men dress in tuxedos or dark suits and the women wear fancy dresses.

VOA: special.2009.12.28

When traveling abroad, he refused the fancy lodgings that were reserved for such distinguished visitors.

在国外旅行时,他拒绝住在为贵客,准备的精致寓所中

耶鲁公开课 - 欧洲文明课程节选

And the fancy word for that is Poisson.

有一个名词叫做泊松。

麻省理工公开课 - 计算机科学及编程导论课程节选

We didn't run for the fancy title or a big desk or a comfy chair.

WHITEHOUSE: Help for Homeowners in the Hardest Hit States

Thank goodness, you can still get some privacy downtown at the Fancy Food deli.

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But I'm sure they'd move the fancy computers out and we could get a little space.

WHITEHOUSE: Press Briefing