catalyst

Chất xúc tác

a substance that causes or speeds up a chemical reaction when it is present, but is not changed or used up in the process

• catalyst for something

Collocations chemical catalyst · industrial catalyst

• The addition of a catalyst speeds up the reaction.

  Việc thêm chất xúc tác làm tăng tốc phản ứng.

Điểm khởi đầu; nhân tố gây ra sự thay đổi

an event or person that causes something to happen, especially a sudden change or development

• catalyst for something

Collocations social catalyst · political catalyst

• The election was a catalyst for change.

  Cuộc bầu cử đã trở thành điểm khởi đầu cho sự thay đổi.