改善售后服务用英语怎么说

改善售后服务用英语可以说作 "improve after-sales service"。

其中，"improve" 是动词，意思是 "改进"；"after-sales" 是形容词，意思是 "售后"；"service" 是名词，意思是 "服务"。

一些英文例句及其中文翻译如下：

We are committed to improving after-sales service for our customers. (我们致力于改善我们客户的售后服务。)
We are constantly looking for ways to enhance our after-sales service. (我们一直在寻找提升我们售后服务的方法。)
Improving after-sales service is crucial for building customer loyalty. (改善售后服务对于建立客户忠诚度至关重要。)