开场白很重要，因为它为演讲奠定基调。
Introduction is of great importance since it sets the tone for the speech.
法律专家称，该判决将有助于为联邦及州法院受理的其它数千起索赔案奠定基调。
The ruling could help set the tone for how thousands of other claims are handled by federal and state courts, legal experts say.
这次会谈是为了世界20个主要发达国家和新兴经济体即将在伦敦举行的会议奠定基调。
The session helped set the stage for the upcoming London meeting of the world's 20 leading developed and emerging economies.
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