exothermic [ˌeksoʊˈθɜ:rmɪk]

例句:

• It is another exothermic contributor to the proton - proton cycle.
  它对质子 - 质子循环则是另一个放能贡献者.
  
• An exothermic reaction releases heat ( energy ).
  放热反应释放出热量 ( 能 ).
  
• They know nothing about exothermic chemical reactions.
  他们对放热的化学反应一无所知.
  
• When water is formed by burning hydrogen, that's an exothermic reaction.
  来自SA