catalyst
US /ˈkæt̬.əl.ɪst/
UK /ˈkæt̬.əl.ɪst/
1.
催化劑
a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
:
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Enzymes act as biological catalysts in the body.
酶在體內充當生物催化劑。
•
The platinum is used as a catalyst in the reaction.
鉑在反應中用作催化劑。
2.
催化劑, 推動力
a person or thing that precipitates an event or change
:
•
Her speech was the catalyst for change in the community.
她的演講是社區變革的催化劑。
•
The new policy acted as a catalyst for economic growth.
新政策成為經濟增長的催化劑。