美国的邮编通常为五位数字。
换句话说，您知道Pamphlet的IS BN一直有五位数字的限制。
In other words, you know that the ISBN of a Pamphlet always has a limit of five digits.
例如，美国的邮政编码是五位数字加上可选的“4个”限定号码，后者由连字符和四位附加数字组成。
For example, a U.S. ZIP code is five digits plus an optional "plus 4" qualifier composed of a hyphen and four additional digits.
认证时，该程序给各参与者显示出一连串由五位数字组成的手写个人身份识别码，每个识别码都是从手写数字中随机抽取生成的。
At authentication, the program showed the participant a series of five-number handwritten PINs, each one randomly generated from the handwritten numerals.
认证时，该程序给各参与者显示出一连串由五位数字组成的手写个人身份识别码，每个识别码都是从手写数字中随机抽取生成的。
At authentication, the program showed the participant a series of five-number handwritten PINs, each one randomly generated from the handwritten numerals.
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