1. 催化劑;誘因;誘導者 You can describe a person or thing that causes a change or event to happen as a catalyst .
e.g. I very much hope that this case will prove to be a catalyst for change... 我非常希望這起事件能催生變革。 e.g. He said he saw the bank's role as a catalyst to encourage foreign direct investment. 他說(shuō)，他認為銀行就應該起到刺激外國直接投資的作用。
2. (化學(xué))催化劑 In chemistry, a catalyst is a substance that causes a chemical reaction to take place more quickly.
catalyst英英釋義
catalyst在線(xiàn)翻譯
noun
1. something that causes an important event to happen
e.g. the invasion acted as a catalyst to unite the country
2. (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected