动词短语
中文翻译：签名
同义词：
['sign', 'seal', 'pledge', 'warrant', 'guarantee']
例句：
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1. The contract was signed by both parties before the meeting.
会议前双方签署了合同。
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2. The agreement is a legal document that must be signed for it to take effect.
该协议是一项法律文件，必须签字才能生效。
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3.The company issued a warrant of good faith to the new investor.
公司向新投资者发出了诚信保证书。