A unity invariably tends to break up into different parts.

统一体总要分解为不同部分的。

《新英汉大辞典》

Once a week you will break up into discussion sections.

每周有一次你们都将被分成讨论小组。

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Yet at the same time China has refused to break up into a warring mess of baronries, as many western experts had predicted.

然而，与此同时，没有像许多西方专家预测的那样，中国一直拒绝演变成混乱的交战状态。

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The corporate entities for which these people work also tend to break up into smaller pieces or get merged into larger ones.

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Traveling through the sky at a few kilometers per second, friction with the air can cause the meteor to break up into several pieces.

CNN: Meteor shows why it is crucial to keep an eye on the sky

Although electrospun bovine serum albumin does not actually break up into droplets, the resulting threads have been so short and irregular as to be useless.

ECONOMIST: Monitor