dispensable [dɪˈspɛnsəbəl]

例句:

• Delete what is dispensable and give more prominence to the essentials.
  可以不说的去掉,该说的就可以更突出.
  来自《简明英汉词典》
• They looked on music and art lessons as dispensable.
  他们认为音乐课和美术课是可有可无的。
  
• Since none of the four is dispensable, they are equally important.
  实际上,这四种力量既然是缺一不可的, 所以是同等重要的.
  
• It turns them into earnest but dispensable blogs.
  来自NEWYORKER
• Vieira de Mello had inadvertently made himself dispensable.
  来自NEWYORKER
• But such global observations only constitute the second half of The Dispensable Nation.
  来自WSJ