self-interest [ˈsɛlfˈɪntrɪst, -ˈɪntərɪst]

例句:

• Many of them placed self-interest before the common good.
  他们中的许多人置一己私利于集体利益之上。
  
• Their current protests are motivated purely by self-interest.
  他们当前的抗议完全是受一己之利驱使的。
  
• He is motivated entirely by self-interest.
  他做事完全出于私利。
  
• So there is a self-interest level to this treaty.
  来自VOA
• Their primary principle is self interest and self promotion.
  来自SA
• Self interest is a powerful and necessary social force.
  来自SA