upbeat [ˈʌpˌbit]

例句:

• Gi Hop is a wrench into something more upbeat.
  来自BBC
• It's hard to question an attitude so upbeat.
  来自BBC
• She should stick to the more adventurously upbeat formula.
  来自BBC
• Neil's colleagues say he was actually in a joking, upbeat mood.
  内尔的同事们说他实际上在说笑逗乐，心情不错。
  
• Scientists remain upbeat about the information that will be gathered.
  科学家对即将收集到的信息仍满怀希望。
  
• The Defense Secretary gave an upbeat assessment of the war so far.
  国防部长对目前的战事给予了乐观的评价。