antiproton [ˈæntiproʊtɑ:n]

例句:

• Dirac's theory also predicted a negatively charged sister for the proton, called the antiproton.
  狄喇克的理论还预言有一种质子的姐妹粒子,带负电荷, 叫做反质子.
  
• Similarly the positively charged proton has a negatively charged antiparticle, the antiproton.
  同样的,带正电荷的质子具有其带负电荷的反粒子—即反质子.
  
• To create a top quark, a proton and antiproton collide at nearly the speed of light.
  来自SA
• In the anti-form, the mirror of an electron - a positron - is bound to an antiproton.
  来自BBC