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catalyst

Prononciation : [ˈkætəlɪst]

Mot

Comment utiliser catalyst dans une phrase : 2 sens et 6 exemples audio.

Contexte : « science »

(noun) a substance that helps a chemical reaction happen faster without being used up. It’s like when you add something to a recipe to make it cook better, but it doesn’t change itself.

Exemple

The enzyme acted as a catalyst, speeding up the reaction in the lab.

Exemple

Without the catalyst, the reaction took much longer and wasn’t as effective.

Exemple

What catalyst did you use to make the reaction go faster?

Contexte : « change »

(noun) something that causes change or helps something important happen. It’s like a friend encouraging you to try something new or exciting.

Exemple

The community event was a catalyst for many positive changes in the neighborhood.

Exemple

Without a catalyst, the project failed to inspire any improvements.

Exemple

What events can be a catalyst for change in your life?

Comment prononcer catalyst

Prononciation : [ˈkætəlɪst]

Écoutez et répétez autant de fois que nécessaire.

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