The stories are all variations on the theme of unhappy marriage.

这些故事讲来讲去无非是这样那样的不幸婚姻。

《牛津词典》

There are variations on this model of course, but the common denominator is always the idea of creating a shopping space that will get people to shop in the city without needing their cars.

当然，这种模式也有不同的版本，但它们的共同之处是：计划创造一个购物空间，让人们在不需要汽车代步的情况下在城市里购物。

youdao

Most are just simple variations on a few favorite meals.

大部分都是一些喜爱的饭食中的简单变化。

youdao

"This one is "Variations on K", because this is the word kiss in every language, including sign language.

VOA: special.2009.11.04

If you go to the dining hall you know, the portions-- one person serves themselves this much of a food and another serves themselves another, and then when you go to a restaurant there are variations on how much you get served of things, and so it's very hard to estimate portions for people.

如果你去食堂,摄入量是指,一个人吃了自己的那部分食物,或其他人吃的他们的那一部分,当你去餐厅,每次吃多少是变化的,因此估算每个人的摄入量是很难的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

We're going to see variations of this, we're going to see a variation of it called recursion, a little later on, but for now we're just going to talk about how do we do iterations.

我们稍后会去，看它的变量,它的所谓的递归数的变量，但是现在我得先讲讲,怎么来实现迭代。

麻省理工公开课 - 计算机科学及编程导论课程节选

And, of course, there are all sorts of variations on the price discount scenario.

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And so, for the rest of the film, we get variations on a theme.

NEWYORKER: Sail Away

Much of the early fun flows from variations on the theme of plus ga change.

WSJ: -