名词
中文翻译：Unknown
同义词：
['inverse', 'reverse', 'invert']
例句：
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1.The countersign of the document is affixed to the back.
文件的背面附有签名。
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2. The company's logo is a countersign that stands for excellence.
公司的商标是代表卓越的逆序标志。
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3.The artist painted a countersign on the wall as a tribute to his late mother.
艺术家在墙上画了一个逆序，作为对已故母亲的致敬。