The children were having fun, chasing each other's shadows.

孩子们追逐着彼此的影子，玩得很开心。

《牛津词典》

We challenge each other to do pistols (one-legged squats) or handstand pushups. Mostly we can't, but it's fun.

我们互相挑战做手枪（单腿下蹲）或是倒立。大多数时候我们不能，但这很有趣。

youdao

How long does each lesson of Fitness Fun last?

每节健身课持续多长时间？

youdao

And hydrogen atom is what we're learning about, so that's the most relevant here. But just to show you that each atom does have its own set of spectral lines, just for fun we'll look at neon also so you can have a comparison point.

为了给你们展示下每个原子，都有自己的一套谱线,仅仅是为了好玩，我们看下氖,你们可以比较一下。

麻省理工公开课 - 化学原理课程节选

They're throwing out insults, maybe they're tickling each other, maybe they're making fun of each other, maybe they're making fun of themselves, and there's some aggression to it.

他们会说伤人的话，胳肢别人，取笑对方，取笑自己，而这些打闹是有一定的侵略性的。

耶鲁公开课 - 心理学导论课程节选

Peers can joke around, gossip, gripe, and poke fun at each other.

FORBES: Promoted Over Your Peers? Now That's Awkward

So, you see, as well as having fun, they each have their business heads too.

BBC: Devon - Sound Of The Sirens

He usually recounts to his brother what happened during each day and even pokes fun of him like he used to.

CNN: Waiting for our son to wake up