名词
中文翻译：邮票的脊部
同义词：
['stamped edge', "edge of a stamp例句：1. The artist's signature is inked onto the back of the stamp.（艺术家的签名被印在了邮票背面。）"]
例句：
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1. The artist's signature is inked onto the back of the stamp.
艺术家的签名被印在了邮票背面。
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2.The stamp collector carefully examines the edge of each stamp to determine its value.
邮票收藏家仔细检查每枚邮票的边缘，以确定其价值。
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3.The stamp was designed with the edge of the leaf in mind.
这枚邮票的设计考虑到了叶子的边缘。