unnecessary [ʌnˈnesəseri]

例句:

• The barbaric slaughter of whales is unnecessary and inhuman.
  对鲸的野蛮屠杀既不必要也不人道。
  
• They will be concerned to cut back expenditure on unnecessary items.
  他们将会考虑削减不必要的开销。
  
• The pity is that it was all completely unnecessary.
  遗憾的是这完全没有必要。
  
• The use of mythology and supernatural entities are unnecessary.
  来自SA
• The Justice Department says such a rule is unnecessary.
  来自WSJ
• They took an extreme gamble, which was unnecessary.
  来自VOA