catalysts ['kætəlɪsts]

例句:

• The first catalytic converters were called conventional oxidation catalysts.
  最初的转化器叫做常规氧化催化器.
  
• Catalysts are materials which greatly speed up chemical reactions.
  催化剂是可以大大加速化学反应的物质。
  
• The Greens were the catalysts of a necessary change in the European consciousness.
  绿党促使欧洲人的观念发生了必要的改变。
  
• One of the main catalysts is overseas demand recovering.
  来自WSJ
• The catalysts for protest, meanwhile, remain unpredictable.
  来自THETIMES
• Catalysts for the synthesis of industrially important...polymers.
  来自Nature