The whole paper is divided into four sections:The first section is the general introduction of the credit card, including its concepts, characters and functions.
第一章是对我国信用卡的概述。 在这一章里,主要对信用卡的定义、性质功能进行了简单的介绍和概括。
参考来源 - 信用卡持卡人权益保护研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The demands, characters and functions of the system are introduced.
介绍了系统需求、特点和功能。
Characters and functions of riboflavin are summarized in this paper.
介绍了核黄素的性质与功能。
Business letters play an important role in business trade. Because of its characters and functions, in business letters, politeness should be paid more attention.
商务信函在商业贸易中扮演着重要的角色，他的特点和功能决定了商务信函中必须注重礼貌原则的运用。
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