stimulant

• 能提高身体或神经系统活动水平的物质，常用于增强精力或警觉性。也指具有兴奋、提神作用的。

A substance that raises levels of physiological or nervous activity in the body, often used to increase alertness or energy.

1. That stimulatesB2formal

   Having the effect of increasing activity or energy in the body or mind.

   兴奋的

   • The stimulant effect of caffeine helps many people stay awake.
   • Certain drugs have a stimulant property that boosts alertness.
   • The doctor warned about the stimulant nature of some medications.

   同义词energizingexcitantinvigoratingstimulatingstimulative

   反义词depressantsedativetranquilizer

• 指能暂时增强生理活动或神经系统活动的物质或事件，常用于提高警觉性、精力或行动力。

A noun referring to a substance or event that temporarily increases physiological or nervous system activity, often used to boost alertness, energy, or action.

1. Arousing actionB2formal

   Any event or piece of information that encourages or provokes activity or response.

   刺激

   • The news of the promotion was a great stimulant for her career.
   • The coach's speech acted as a stimulant for the team's performance.
   • Economic growth can be a stimulant for new business ventures.

   同义词encouragementimpetusincentiveincitementmotivationprovocationspurstimulus

   反义词depressantsedativesoothingtranquilizer

2. Drug that quickens vital processesB2formalmedical

   A substance, often a drug, that temporarily increases physiological or nervous system activity.

   兴奋剂

   • Caffeine is a common stimulant found in coffee and tea.
   • Doctors sometimes prescribe stimulants for certain medical conditions.
   • Excessive use of stimulants can lead to health problems.

   同义词analepticbracerexcitantpick-me-uptonicupper

   反义词depressantsedativetranquilizer