courteous
adj. 有礼貌的,谦恭的
例句
He was a kind and courteous man.
他善良且彬彬有礼。
《柯林斯英汉双解大词典》
The hotel staff are friendly and courteous.
旅馆服务人员友好而有礼貌。
《牛津词典》
Being respectful and courteous goes a long way toward building a relationship.
对人恭谨、彬彬有礼是建立关系的重要因素。