增加贫穷的服务对象对提供服务的选择和参与，这样他们就能监督和约束服务提供者。

By increasing poor clients' choice and participation in service delivery, so they can monitor and discipline providers.

youdao

这些约束指出服务契约要完成的是什么，以及如何衡量是否成功。

These constraints indicate what the service contract is intended to accomplish and how to measure success.

youdao

它表示服务的策略主张和约束。

This denotes policy assertions and constraints on the service.

youdao