If a domestic regulatory measure is found to discriminate against imports, the regulating government may attempt to justify the discrimination by proving that it is necessary to achieve some legitimate purpose.
如果发现某一国内管制措施对进口产品具有歧视性，有关政府可试图说明歧视的理由，证明为实现某种合法目的这种差别待遇是必要的。