catalytic

柯林斯词典

1. ADJ In chemistry, a catalytic substance or a substance with catalytic properties is a substance which increases the speed of a chemical reaction. 起催化作用的[ADJ n]
...carbon molecules with unusual chemical and catalytic properties. ...具有不寻常的化学催化属性的碳分子。
2. ADJ If you describe a person or thing as having a catalytic effect, you mean that they cause things to happen or they increase the speed at which things happen. 促进发生的; 加速发生的[正式] [usu ADJ n]
Governments do, however, have a vital catalytic role in orchestrating rescue operations. 但是，政府的确在精心安排的营救活动中，扮演着重要的催化角色。