如果您想要使组件或系统更可复用——也就是说，拥有更大的可复用元素——那么您将领域缩小为它适用的大小。

If you want to make a component or system more reusable — that is, having larger reusable elements — you narrow the domain to which it applies.

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而那种大量炮制肌动蛋白和肌凝蛋白的细胞，连接在一起从而形成可扩展及缩小的单元，这种细胞将成为肌肉细胞。如此类推。

One that churns out actin and myosin, which link up to form units that can expand and contract, will become a muscle cell. And so on.

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这一技术可缩小可能的嫌疑犯的范围。

The test could narrow down the range of possible suspects.

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