catalyst [ˈkætlɪst]

例句:

• I see my role as being a catalyst for change.
  我认为我的角色是促成变革。
  
• The workers'demand for better conditions was a catalyst for social change.
  工人们要求改善工作条件促进了社会变革.
  
• A catalyst is a substance which speeds up a chemical reaction.
  催化剂是一种能加速化学反应的物质.
  
• Now everyone's waiting for the next big catalyst.
  来自WSJ
• The Bon Jovi concert proved the catalyst for change.
  来自BBC
• The other creative catalyst was producer Felix Pappalardi.
  来自BBC