名词
中文翻译：压痕
同义词：
['imprint', 'impression', 'indentation', 'imprinted']
例句：
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1. The stamp on the envelope is a pressmark from the post office.
信封上的邮戳是邮局的压痕。
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2. The car's paint has a pressmark that shows its make and model.
这辆车的油漆上有压痕，显示了它的品牌和型号。
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3. The stamp collector found a pressmark on the back of a rare stamp.
邮票收藏家在一枚罕见邮票背面发现了压痕。