动词
中文翻译：签字批准
同义词：
['sign', 'ratify', 'approve']
例句：
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1. The company has signed a new contract with the supplier.
公司已经与供应商签署了一份新合同。
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2. The project was approved by the board of directors.
该项目得到了董事会的批准。
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3. After signing the agreement, they began to work on the project.
在签署协议后，他们开始着手进行这个项目。