The more nodes in the render tree that need recalculation, the worse it becomes.

渲染树的大多数节点需要被重新计算，它变得更糟糕。

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Depending on the nature of the change, a smaller or bigger part of the render tree needs to be recalculated.

根据改变的性质，渲染树上或大或小的一部分需要重新计算。

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Reflows sometimes affect only a small part of the render tree, but they can affect a larger portion, or even the whole tree.

重排版有时只影响渲染树的一小部分，但也可以影响很大的一部分，甚至整个渲染树。

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