9. We are competitive in our excellent after-sale service.
我們有非常卓越的售后服務。
還能這樣說：
We provide good customer service.
We have sound customer service.
10. What is your after-sale service hotline?
你們的售后服務熱線是什么？
還能這樣說：
Can you tell me the after-sale service hotline?
Do you mind telling me the telephone number of the after service?
應用解析：
pay lip service 耍嘴皮
11. The company provides after service free of charge.
公司提供免費的售后服務。
還能這樣說：
The back-up service is free in the company.
There is no charge for the after service in the company.
應用解析：
take service 參與，服役
12. The after service lasts for one year.
售后服務的時間是一年。
還能這樣說：
We guarantee one year's after service.
We provide the after service in one year.