stimulant
🇺🇸
/ˈstɪmjələnt/
🇬🇧
/ˈstɪmjələnt/
a substance that makes you more awake or energetic
Coffee is a common stimulant that helps people stay alert.
咖啡是一种常见的使人更清醒或精力充沛的物质,能帮助人们保持警觉。
something that encourages more action or activity
The new policy acted as a stimulant for economic growth.
新政策起到了鼓励更多经济活动的作用,促进了经济增长。