| 例句 |
catalystnoun something that arouses action or activityHer expulsion from the university proved to be a catalyst for needed change. catalyzer, fuel, sparkactivator, animator, driver, energizer, executor, generator, impetus, incentive, inspiration, instigation, instigator, launcher, mover, power, stimulus, triggerdeterminant, expedient, factor, influence, ingredient, mechanism, toolweaponantecedent, cause, impulse, occasion, reasonboost, encouragement, goad, incitation, incitement, momentum, motivation, provocation, spur, stimulant, yeastagency, agent, instrument, instrumentality, machinery, means, medium, ministry, organ, vehiclesubagency, subagentinducement, invitation counterincentive, disincentive in 1902 |