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- a substance that raises levels of physiological or nervous activity in the body兴奋剂。
1.1
- something that increases activity, interest, or enthusiasm in a specified field刺激物, 激励物：
population growth is a major stimulant to industrial development.
人口增长是刺激工业发展的一个主要因素。
- raising levels of physiological or nervous activity in the body使兴奋的; 刺激性的：
caffeine has stimulant effects on the heart.
咖啡因对心脏有刺激作用。
词源
early 18th cent.: from Latin stimulant- 'urging, goading', from the verb stimulare.