食品中钾的含量是多变的。

The potassium content of foodstuffs is very variable.

《柯林斯英汉双解大词典》

农民已经通过改变种植计划来适应多变的天气。

Farmers already adapt to variable weather by changing their planting schedules.

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北美歌雀在切换到另一种类型之前，会一声一声地重复其中的一种，与之不同的是，北美歌雀会连续地创作更长的、更多变的歌曲，而不会重复。

Unlike the song sparrow, which repeats one of its several song types in bouts before switching to another, the warbler continuously composes much longer and more variable songs without repetition.

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That's not just a set of functions--variables, as one might say in the lab.It's produced by genius.

它不仅仅只是一套机器，像人们在实验室所见的一样多变，它是由天才创作的。

耶鲁公开课 - 文学理论导论课程节选

One thinks of D. H. Lawrence's Sons and Lovers, for example, in which the central character, Paul Morel, is crippled by an Oedipus complex that he can't master and the difficulties and complications of the plot are of this kind.

拿D。H。劳伦斯的《儿子与情人》来说，里面的核心人物保罗，被自己不能控制的俄狄浦斯情节困扰,复杂多变的情节也就由此展开。

耶鲁公开课 - 文学理论导论课程节选