名词
中文翻译：Unknown
同义词：
['document', 'legal document', 'contract', 'agreement']
例句：
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1. The government issued a new set of regulations to regulate the industry.
政府发布了一套新的法规来规范该行业。
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2. This is the only copy of the contract we have.
这是我们唯一的合同副本。
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3. They signed the agreement before leaving for their trip.
他们在出发前签署了协议。