因而您寻求的将是一个算法，可以输入一个对特定邮票的编码描述，然后输出应得的一个基本邮票图案。
Your quest then would be an algorithm that can input an encoded representation of a particular stamp, and output just one base stamp pattern.
从邮资信封、邮资明信片、邮资邮简上剪下的邮票图案。
Stamp patterns cut off from stamped envelopes, stamped postcards and stamped aerogrammes.
1851年版三便士的河狸邮票是加拿大发行的第一枚邮票，票面就是以河狸为图案。
The first Canadian postage stamp, the 1851 Three-Penny Beaver, carried its image.
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