名词中文翻译
中文翻译：有效期限
同义词：
['validity period', 'validity date']
例句：
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1.The contract has a three-year date of validity.
合同的有效期限为三年。
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2. The product has a one-month date of validity.
该产品的有效期限为一个月。
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3. The agreement is valid until the end of the month.
该协议有效期至月末。