名词
中文翻译：不忠的
同义词：
['unfaithful', "treacherous例句：1. The couple's relationship was marred by their infidelity.（这对夫妇的关系因不忠而受损。）"]
例句：
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1. The couple's relationship was marred by their infidelity.
这对夫妇的关系因不忠而受损。
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2.He was accused of being a treacherous friend to his colleagues.
他被指控对同事不忠。
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3. The scandal tarnished the reputation of the company.
丑闻毁了公司的声誉。