然而，目前的问题是关于养育，所以象信用之类的术语需要精确定义。
The current problem domain is parenting, however, so terms like credit need to be defined precisely.
信用卡发行商也应使用平直的英语解释其条款和术语，向消费者通告使用其信用卡的成本。
Card issuers will also be obliged to explain their terms in plain English and inform customers about the cost of using their CARDS.
通过添加一个术语，“信用卡”来变更词汇表。
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