customer
词根词缀：
词根
custom= habit 习惯
accustom v. 使习惯
ac 加强 + custom 习惯 → 使习惯
customary adj. 习惯性的
custom 习惯 + ary …的 → 习惯性的
customer n. 顾客
custom 习惯 + er 表名词 → 习惯〔进商店的〕人 → 顾客
数据来源：新东方英语词汇速记大全
相关例句：
Good customer relations require courtesy, professionalism and effective response.
良好的客户关系需要做到礼貌、专业，并提供有效的回复。
He refused to bow and scrape to every customer.
他不愿奉承每个顾客。
As a salesman, your cardinal rule is to do everything you can to satisfy a customer
作为推销员，你的首要任务是竭尽全力让顾客满意。
Many a customer has been lost through negligence of service.
由于服务不周失去了许多老主顾。
Our customers have very tight budgets.
我们的顾客很会精打细算。
We also improved our customer satisfaction levels.
我们也提高了顾客满意的标准。