catalyst
US /ˈkæt̬.əl.ɪst/
UK /ˈkæt̬.əl.ɪst/
1.
催化剂
a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
:
•
Enzymes act as biological catalysts in the body.
酶在体内充当生物催化剂。
•
The platinum is used as a catalyst in the reaction.
铂在反应中用作催化剂。
2.
催化剂, 推动力
a person or thing that precipitates an event or change
:
•
Her speech was the catalyst for change in the community.
她的演讲是社区变革的催化剂。
•
The new policy acted as a catalyst for economic growth.
新政策成为经济增长的催化剂。