The first section of the macro breaks down the list of constraints case into multiple single constraints cases.

宏的第一部分将约束列表分割成多个单一约束。

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Constraints can be simple single values, or they can be a compound value or multiple types.

约束可以是简单的单值，也可以是复合值或多个类型。

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It can take one of two forms — either having a single constraint to process or a list of constraints to process.

它采用两种形式之一——要么用单一约束进行处理，要么用一系列约束进行处理。

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In a single European market with strict budget constraints the wealthy Germans should dominate.

FORBES: Football and the eurozone crisis

Orion, for example, operates near absolute zero, and previous attempts to build single-photon detectors have suffered similar constraints.

ECONOMIST: Quantum information technology

Offering a tax credit to single people too would make it easier for employers to reduce wages to reflect it, subject to the constraints of any minimum wage.

ECONOMIST: Welfare reform