It traces an arc, not a straight line, as income increases.

当收入增高时，收入和身高关系呈弧形，而不是直线。

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As income increases, its added contribution to life satisfaction becomes smaller.

因为，随着收入的增多，它对生活满意度的作用也逐渐减小。

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As income increases, the frequency at which colds are reported in the family decreases.

随著收入的增加，家庭成员的感冒次数呈下降趋势。

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The tax code also includes an "AMT exemption, " which phases out as your income increases.

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Or put more plainly, luxury is historical in nature, so as income inequality increases thanks to commercial success, lifestyle inequality decreases.

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The marriage penalty only increases as income and the number of children rise.

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