Hospitals and clinics compete for a patient's business; thus, they provide good service at low cost.

医院和诊所为了病人的生意竞争；因此，他们以低价提供优质服务。

It was, he argued, only right to stop the government from going after the earnings of people who provide good service.

他认为，不要让政府对提供优质服务的人的收入紧追不放是正确的。

The Pony Express was a private company, it was not part of the U.S. government, but they hoped that they would provide good service so that the government would give them work – would give them a contract.

Pony Express 是一家私人公司， 不隶属于美国政府，但他们希望他们能提供良好的服务， 以便政府给他们工作——给他们一份合同。