序言的 meaning in English

preludial
prelusive

On purpose and effect of constitution preamble
宪法序言的功能与效力研究
In one instance , in may 2001 , the liaison between the research and investment banking divisions was advised that a poultry company , pilgrim s pride , was seeking equity research coverage in connection with a prospective high - yield offering . the liaison made clear that morgan stanley should not commit to providing coverage until it received a certain amount of investment banking fees from the company : be careful with this one
经专家组审理和上诉机构复审，最终认定美国的“海虾海法”及其贸易措施的实施违反gatt第20条序言的原则要求，即“在遵守关于此类措施的实施不在情形相同的国家之间构成任意或不合理歧视的手段或构成对国际贸易的变相限制的要求前提下” ，构成了“专横的不可论证为正当的歧视” 。