catalysts催化剂catalystn.催化剂；刺激因素catalyst of desiccation for paint油漆催干剂catalyst-oil mixing temperature油剂混合温度catalystic iron inner electrolysis催化铁内电解catalyst for petrochemical industry石油化工催化剂catalystic hydrogenation of coal tar煤焦油催化加氢catalyst for environmental protection环境保护催化剂catalystic aluminum inner electrolysis催化铝内电解catalysts for environmental protection[化] 环境保护催化剂Catalysts Market Strives for Innovation全球各行业用催化剂创新动态catalyst for inorganic chemical industry无机化工催化剂

1. The last step is to regenerate the catalyst.
   最后一步是将催化剂还原。
2. This tragedy will be a catalyst for good.
   这场悲剧会是美好的催化剂。