preamble [ˈpriˌæmbəl, priˈæm-]

例句:

• The aims of the treaty are stated in its preamble.
  条约的宗旨已在序言中说明。
  来自《权威词典》
• Existence becomes merely a preamble to a more vital goal.
  来自SA
• He spoke without preamble.
  他没有开场白地讲起来.
  
• "I would like you to return to the villa as soon as possible," she said without preamble.
  她开门见山地说：“我想让你尽快回到别墅。”
  
• Survival we find is only a preamble to what lies beyond.
  来自SA
• Wednesday's festivities were merely the preamble.
  来自THETIMES