名词

1. 兴奋剂;引起兴奋的药物
A stimulant is a drug that makes your body work faster, often increasing your heart rate and making you less likely to sleep.

1. a drug that temporarily quickens some vital process

Synonym: stimulant drugexcitant

2. any stimulating information or event
acts to arouse action

Synonym: stimulationstimulusinput