名词
中文翻译：无
同义词：
['void', 'nonentity', 'nullness']
例句：
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1. The nullity of the agreement was a major concern for the company.
协议的无效性是公司的主要担忧。
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2. The nullity of the contract made it impossible to enforce it.
合同的无效性使得无法执行它。
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3. The nullity of the document meant that it had no legal effect.
文件的无效性意味着它没有法律效果。