请问：服务一流 用英语怎么说呢？谢！

best service.
offer best service.
eg.The hotel can offer best service.

服务一流 first class services

国外常说的有：first-class service, 或 first-rate service.

若想用动词形式就说：XXX offers first-class/rate service.

the first-class service

最常见就best service

excellent service。