MEANING/意义
有效
EXAMPLES/列句
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在有效期内within the period of validity
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合同有效期period of validity of a contract
COMBINATIONS/组合
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有效期period of validity,term of validity,period of efficacy
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有效率to be effective,to have efficiency; effective percentage,effective rate
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有效性validity
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有效汇率effective exchange rate
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有效证件valid documentation/certification
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有效日期validity period
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有效期至date of validation is...; valid until...
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有效期限time of validity