incidental [ˌɪnsɪˈdɛntl:]

例句:

• The discovery was incidental to their main research.
  这一发现是他们主要研究中的附带收获。
  
• Keep this money for your incidental expenses.
  这点儿钱,你留着零花吧.
  
• At the bottom of the bill, you will notice various incidental expenses such as faxes.
  在账单底部，你会发现有传真等各项杂费。
  
• His talk of handbag bonfires isn't completely incidental.
  来自WSJ
• The man had some incidental expenses to square away.
  来自NEWYORKER
• Operate the department's motor vehicles as an incidental driver.
  来自SA