unnecessarily [ʌnˈnɛsəˌsɛrɪlɪ]

例句:

• The proposed regulations are ill-defined and cumbersome and could be unnecessarily costly.
  提议的规章制度阐述不清、复杂低效，而且可能会带来不必要的过高花费。
  来自柯林斯例句
• I didn't want to upset my husband or my daughter unnecessarily.
  我不想让我的丈夫和女儿不必要地担忧。
  
• The silence lengthened as Thorne unnecessarily shuffled some papers.
  索恩整理着一些本无须整理的文件，沉默还在延续。
  
• Much habitat area is unnecessarily taken away from wildlife.
  来自SA
• The cost of contract support has been unnecessarily high.
  来自VOA
• They say too many people are dying unnecessarily.
  来自VOA