名词
中文翻译：信用卡储蓄器
同义词：
['credit card saver', 'credit card holder']
例句：
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1. The card saver is a device that allows you to store your credit card information on a physical card.
信用卡储蓄器是一种设备，允许您将您的信用卡信息存储在一张实体卡片上。
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2. The card saver has a built-in memory that can hold up to 100 cards.
信用卡储蓄器内置内存，可以存储多达100张卡片。
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3. She used her card saver to pay for the groceries without having to carry cash.
她使用她的信用卡储蓄器支付了杂货费用，无需携带现金。