1. We can guarantee that you shall get courteous responses. 我们可以保证你会得到有礼貌的回应。
2. The general manager was quietly courteous to everyone on his staff. 总经理对手下的职员总是温文尔雅，彬彬有礼。
3. Enterprises adhere to the "quality first, the customer first, reasonable prices, courteous service" principle, welcome the new Old customers throughout the visit! 本企业坚持以“质量第一，顾客至上，价格合理，服务周到”为原则，欢迎广大新老客户光临惠顾！
英英解释
adj.
1. exhibiting courtesy and politeness
2. characterized by courtesy and gracious good manners
