| 单词 | catalyst |
| 释义 | catalyst n. 1. Chem. a substance that, without itself undergoing any permanent chemical change, increases the rate of a reaction. 2. a person or thing that precipitates a change. Etymology: as CATALYSIS after analyst |
| 随便看 |
英语词典包含43808条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。