quality of service

例句：

1. 1. The customer service team is responsible for handling complaints and resolving issues.
   客户服务团队负责处理投诉和解决问题。
2. 2. The company's commitment to providing high-quality service has helped it gain a loyal customer base.
   公司致力于提供高质量服务，这帮助它赢得了忠实的客户群。
3. 3. The government has introduced new regulations to improve the quality of service in public transportation.
   政府已经引入新规定来提高公共交通服务的质量和效率。