They both began to laugh over nothings as children will when they are happy together.

任何事情都能让他们开怀大笑，就像孩子们开心地在一起的时候一样。

youdao

We had a laugh over that one.

我们对此大笑。

《柯林斯英汉双解大词典》

We have a good laugh over his story.

我们都感到他的故事听起来很好笑。

youdao

We will laugh about it soon over a glass of that Amontillado.

VOA: special.2009.02.07

We had a good laugh over grannies and their culinary totalitarianism, and then I started thinking about that lasagna.

WSJ: Easter Feast for the Champagne Set

We were successful, we Canadians had a good laugh over another Charles-the-obsessor-of-details story, and that purchase turned out a company-maker for Samson-Canada.

FORBES: What Makes a Good Founder? Hint: It's in the details

We used to laugh over aposiopesis in Latin class because it seemed disarmingly colloquial for a sea god to talk like that.

WSJ: Austin Ratner, Author of In the Land of the Living, on Aposiopesis | Word Craft